Grand Slam/GrandSlam volume 1.iso/arj241.exe/ARJ.DOC

Text File | 1993-06-04 | 143KB | 3,874 lines

     User's Manual for the ARJ archiver program,                April 1993



    ARJ software and manual copyright (c) 1990-93 by Robert K Jung.
    All rights reserved.

    ARJ version 2.41 release



     ** IMPORTANT NEWS ****************************************************

    Users of ARJ should read the WHATSNEW.DOC and UPDATE.DOC files
    which contain information about the latest improvements to ARJ.

     **********************************************************************



     TOPICS COVERED IN THIS DOCUMENT
     -------------------------------

     DEDICATION
     INTRODUCTION
     TERMINOLOGY
     MAJOR FEATURES OF ARJ
     ARCHIVER BENCHMARKING
     RELEASE NOTES
     TECHNICAL NOTES
     ARJR AND DEARJ PROGRAMS
     INSTALLATION
     QUICK START TO USING ARJ
     HOW TO CREATE AN EXECUTABLE SELF-EXTRACTING ARJ ARCHIVE
     CONVERTING OTHER ARCHIVE FILES TO ARJ FORMAT
     HOW TO USE ARJ
     ARJ LIMITATIONS
     IMPORTANT DIFFERENCES BETWEEN ARJ AND LHARC:
     IMPORTANT NOTES
     TIPS TO USING ARJ EFFICIENTLY
     USING ARJ WITHIN OTHER PROGRAMS
     ARJMENU PROGRAM
     USING ARJ AS A BACKUP PROGRAM
     BACKUP TYPE ARCHIVES AND BACKUP FILES
     THE FILESPEC "..."
     ARJ ERROR SITUATIONS
     ARJ DOS ERRORLEVELS
     ARJ USER ACTION PROMPTS
     ARJ ENVIRONMENT VARIABLE
     ARJ COMMAND LINE SYNTAX
     ARCHIVE NAME WILDCARDING
     ARJ COMMANDS
     ARJ SWITCH OPTIONS
     ARJ COMMAND OPTIONS
     SAMPLE ARJ COMMANDS
     ARJ_SECURITY ENVELOPE
     KNOWN ARJ ISSUES/PROBLEMS
     ARJ ERROR MESSAGES
     ARJ TECHNICAL SUPPORT
     ARJ AVAILABILITY
     SDN EXTENSION FILES
     DISTRIBUTORS
     ACKNOWLEDGEMENTS
     USAGE AND DISTRIBUTION POLICY
     BRIEF BIOGRAPHY OF ARJ AUTHOR:
     FINAL COMMENTS



     DEDICATION:

    The ARJ program is dedicated to God and to my family.


     INTRODUCTION:


    ARJ is the result of a desire to use my interest in compression
    technology to produce an archiver for personal use on PCs and on
    minicomputers that provides power and excellent flexibility.

    I expect to continue to improve ARJ in speed, compression, and
    features.

    There are plans to port versions of ARJ to other platforms in the
    future pending sufficient time and funding.


     TERMINOLOGY:

    The following terms are used through this manual.

    ARCHIVE - This is a file containing one or more files in a
    compressed or non-compressed state and containing file related
    information such as filename and date-time last modified, etc.

    ARJ FILE - This is an archive created by ARJ, sometimes called an
    arjive in slang terminology.

    BACKUP TYPE ARCHIVE - This is an ARJ archive which has the internal
    backup flag turned on.    This causes all current and future updates
    to the archive NOT to overwrite internal files in the archive when
    adding files with the same names as ones already in the archive.
    The older duplicate files in the archive will be marked as backups.

    COMPRESSION - The process of encoding redundant information into
    data requiring less storage space.

    COMPRESSION PERCENTAGE/RATIO - The percentage compression reported
    by ARJ is a variation of one of the TWO standard methods of
    expressing compression ratio in the technical literature.  ARJ uses
    the compressed size / original size ratio.  The other method is the
    inverse ratio.    When ARJ reports 96% as the compression ratio, that
    means that the compressed file is 96 percent of the original size
    (very little compression).  Other archivers use their own methods.
    LHARC uses the same ratio as ARJ.

    EXTRACTION or UNCOMPRESSION - The processing of recreating the
    exact information that was previously compressed.

    SELF-EXTRACTION MODULE (SFX) - This is an archive that is an
    executable file that is capable of extracting self-contained files.

    TEXT MODE - In text mode, ARJ inputs the file using the C library
    text mode which translates the carriage return, linefeed control
    characters of MS-DOS to a single linefeed character.  This saves
    space and provides the option for cross platform file extraction.
    On another platform, the host C library would change the single
    linefeed to the host text newline separator sequence.  In addition,
    for platforms such as PRIMOS which set bit 8 in ASCII text
    characters, ARJ sets/resets bit 8 according to the platform
    extracted to.  When extracting a text mode file to the same type
    of platform archived from, ARJ will NOT strip the 8-bit text to
    7-bit text.

    VOLUMES - These are ARJ archives that are in sequence and have been
    created by a single ARJ command.  Files in the volumes may span
    volumes in a split format.  These volumes are usable archives.


     MAJOR FEATURES OF ARJ:

    Currently ranks as one of the best in compression in terms of size
    reduction of the currently available archivers including PKZIP
    1.10, PKZIP 2.04, PAK 2.51, ARC 7.0 (ARC PLUS), LHARC 1.13c, LHA
    2.13 and the new ZOO 2.10.  ARJ is particularly effective with
    database files and documents.

    Archive and individual file comments with the option of
    inputting comments from a file.

    ARJ has MS-DOS 3.x international language support for the proper
    casing of filenames and text.

    32 bit CRC file integrity check.

    DOS volume label support.

    Default storing of specified pathnames to allow recovery of a
    directory structure.

    Empty directory support.

    File generation archive support where ARJ will allow the user to
    keep several versions of the same file in an archive.

    Test new archive before overwriting the original archive option.

    Archives that can span diskettes.  This allows the user to backup
    a full hard disk drive to multiple floppies.  Recovery of
    individual files is convenient because each diskette archive is an
    individual archive except for the split file portion.  No need to
    use SLICE with ARJ.  In addition, ARJ in disk spanning mode can
    support the use of 3.5 HD diskettes formatted at higher capacities
    than 1.44 MBytes.  Moreover, ARJ can build these disk spanning
    archives on the hard disk drive for later transfer to diskettes.

    Archive file re-ordering facility with the option of sorting by
    file size, file extension, CRC value, date-time modified, filename,
    pathname, compression ratio, file attribute and more.

    String searching with context display within archive files.

    Built-in facility to recover files from broken archives.

    Self-extraction feature that is internal to the ARJ runfile.  The
    SFX module is full-featured with a built-in help screen.  ARJ also
    includes a smaller SFXJR module with few features.

    Internal string data integrity check in ARJ to resist hacking a la
    LHARC to ICE.

    Archive security envelope feature to resist tampering with secured
    archives.  This feature disallows ANY changes to a secured archive.
    Even the archive comments can NOT be changed.

    Password option to encrypt archived files.

    Text mode data compression option to enable movement of text files
    from one host machine to another.  Text mode also results in
    slightly greater file size reduction on MS-DOS machines.

    File extraction to screen in a paged mode to permit browsing
    through an archive.

    Specification of the files to be added to or exclude from an
    archive via one or more list files.  In addition, ARJ can generate
    a list file.

    Specification of files to be excluded from processing by ARJ.

    Sub-directory recursion during compression and extraction.


     ARCHIVER BENCHMARKING:

    This is information for those who plan to publish benchmark test
    results comparing ARJ with other file archivers.

    The ARJ -jm compression is intended to demonstrate the best that
    ARJ can do in terms of size reduction.    However, the ARJ -jm1
    compression is almost as good in terms of size reduction.  The ARJ
    -m2 compression is intended to compete with LHA 2.12.  The ARJ -m3
    compression is intended to compete with PKZIP 1.10.

    The ARJ -e option is necessary during size benchmarks because ARJ
    by default stores the entire specified pathname in the archive as
    opposed to other archivers which strip path specs.

    The very size of the ARJ runfile adds significantly to the
    compression and extraction times when testing smaller archives.


     RELEASE NOTES:

    The use of ARJ in a business, commercial, institutional, or
    government environment requires a license.  However, business,
    commercial, institutional and government users may use ARJ for
    evaluation purposes for a period of 30 days.  See the LICENSE.DOC
    for full details.

    The inclusion of any of the ARJ software (ARJ, ARJR, DEARJ,
    ARJSFX, ARJSFXJR, REARJ) with software and/or hardware for
    distribution requires a license.

    While evaluating ARJ, you should use the "-jt" (test archive)
    option to verify new ARJ archives of your data.

    This version has been tested under DOS 2.11, 3.3, 4.01, 5.0, and
    DOS 6.0.  It also runs under the DOS windows of Windows 3.x and
    OS/2 2.0.

    Here is a suggested command that will test ARJ on all of your files:

    ARJ a testvol c:\ "-v360sdel testvol.*" -xtestvol.* -y -jf -jt1 -r


     TECHNICAL NOTES:

    A detailed technical description of the ARJ archive format is
    available in the UNARJ distribution archive.  This archive
    contains a description of the archive header formats as well as C
    source code for an ARJ archive extractor and lister program.  This
    source code has been made portable to several platforms including
    UNIX, NEXT, DOS, and AMIGA.


     ARJR, DEARJ, and REARJ PROGRAMS:

    The new programs ARJR and DEARJ are available to registered and
    licensed users of ARJ.    ARJR is the ARJ program without the help
    screen and SFX modules.  DEARJ is the ARJR program without the
    archive creation/modification functions, the "w" command, and
    the "-jt1" and "-jt2" switches.

    There are two versions of REARJ, the shareware version and the
    registered version.  The registered version contains a number of
    additional enhancements including environment variable usage,
    !listfile capability and selection by file date-time.

    See the LICENSE.DOC and ORDERFRM.DOC for more information.

    UNARJ and DEARJ are NOT the same program.


     INSTALLATION:

    I assume that you have a copy of the self-extracting ARJ module
    named ARJ###.EXE where "###" represents the ARJ version number.
    Typing ARJ### [RETURN] at the DOS command prompt will initiate the
    self-extraction feature.  ARJ### will by default extract its files
    to the current directory.  When ARJ### starts, you will see
    several lines of text describing ARJ and then a line asking if you
    wish to continue extraction.  Entering "yes" or "y" will continue
    the extraction.  If there are any duplicate filenames in the
    current directory, the program will prompt you for overwriting.
    You can enter "yes", "no", or "quit".

    To install the ARJ software, simply copy ARJ.EXE, REARJ.EXE,
    REARJ.CFG, and ARJSORT.COM to one of the directories named in the
    DOS PATH statement found in your AUTOEXEC.BAT.    On many PCs, this
    directory may be C:\DOS or C:\BIN.  With MS-DOS 3.0 and above, you
    can use path notation "\BIN\ARJ e archive" to use ARJ.

    You may, of course, prefer to use ARJ 1.00 or higher to extract
    the contents of ARJ###.EXE file manually.

    Example:  ARJ e ARJ###.EXE \temp\


     QUICK START TO USING ARJ:

    See the document INTRO.DOC.


     HOW TO CREATE AN EXECUTABLE SELF-EXTRACTING ARJ ARCHIVE

    The command "ARJ y -je archive" will create a full featured
    self-extracting archive from an already built archive.

    The command "ARJ y -je1 archive" will create a smaller
    self-extracting archive.

    Syntax:  ARJ y -je archive    produces archive.exe

    Under DOS systems other than 2.11, 3.2, 3.3, 4.0, 5.0 and 6.0
    you may have to rename the self-extract module to ARJSFX.EXE to
    do the extraction.

    See the "-je" option for more information.


     CONVERTING OTHER ARCHIVE FILES TO ARJ FORMAT

    Included with this software is the program REARJ.  This program can
    be used to individually or collectively convert archive files from
    other formats to the ARJ format.

    REARJ *.ZIP *.ARC *.LZH   will convert all ZIP, ARC, and LZH
    archives in the current directory to the ARJ format.  See the
    REARJ.DOC for more information about REARJ.


     HOW TO USE ARJ:

    If you type ARJ [return], you will see a simple help screen.

    If you type ARJ -? [return], you will see more detailed help
    information.


     ARJ LIMITATIONS:

    ARJ will accept up to:      64 filenames/wildnames on command line
                   16000 filenames resulting from wildnames
                8000 filenames/wildnames to exclude
                8000 ARJ filenames resulting from wildnames
                2048 character comments
                     (up to 25 lines or 1 file)

    For compressing, ARJ requires approximately 300,000 bytes plus the
    memory necessary to store all of the pathnames to be archived when
    using the default compression method (-m1).

    For extracting, ARJ requires approximately 175,000 bytes plus.
    The program DEARJ (available to registered users) requires
    approximately 125,000 bytes plus.

    There is no limitation on the number of files that can be stored in
    one archive.  However, each add command can only add a maximum of
    16000 files at a time depending upon memory availability.  I expect
    that a normal maximum of 5,000 to 10,000 filenames can be handled
    without running out of memory during the compress phase.

    If you do not have enough memory, you should use the "-l" switch to
    dump the filenames to a list file.  You can then break the list
    file into smaller files and use multiple ARJ commands to archive
    all of the files.

    Example:

       ARJ a -r -lname.lst archive \*.*

       If the above command fails due to lack of memory, split the
       name.lst file into smaller pieces named name1.lst, name2.lst,
       etc.  Then execute:

       ARJ a archive !name1.lst
       ARJ a archive !name2.lst
       .
       .

    ARJ currently does not see that wildnames like "C:*.*" and "C:\*.*"
    can actually represent the same thing.    ARJ would expand each of
    those two wildnames into a list that could be up to twice as long
    as necessary.

    When updating an archive, ARJ creates a temporary file named
    ARJTEMP.$nn in the current directory or work directory.

    While ARJ is scanning a wildcard filespec, ARJ will change the name
    of the target archive to ARJTEMP.$nn while the scan is proceeding
    to avoid including the archive itself in an add or move command.
    Also, as a result, you cannot add a file named ARJTEMP.$nn to an
    ARJ archive.  Please note that the name of this temporary file may
    change at a future revision of ARJ.


     IMPORTANT DIFFERENCES BETWEEN ARJ AND LHARC:

    ARJ by default stores the full specified pathname of files
    archived minus any drive letter and root symbol.

    The "e" and "x" commands will by default extract all of the files
    in the archive without using date time stamps to select files.    You
    should specify "-u -y" to duplicate LHARC functionality.

    The "f" command in ARJ requires the -r switch to be functionally
    identical to the LHARC f command if the original archive were
    created using the -r switch.

    ARJ uses the "!" symbol as a prefix character to indicate list
    files.


     IMPORTANT NOTES:

    When using the "-w" working directory switch, ARJ does not check on
    space availability before overwriting the original archive if it
    exists.  Be sure that you have enough disk space for the new
    archive before using the "-w" switch.  If ARJ aborts in this
    situation because of disk space, ARJ will keep the temporary
    archive.

    By default, ARJ does not see hidden or system files.  ARJ will
    process system and hidden files when you either specify the "-a"
    switch.

    Like LHARC and PKZIP, ARJ requires extra disk space to UPDATE an
    archive file.  ARJ will backup the original archive while it
    creates the new archive, so enough room must be available for both
    archives at the same time.

    Unlike PKZIP, ARJ does not require additional work space when
    CREATING a new archive.

    Currently, ARJ will not extract overwriting a readonly file unless
    the "-ha" option is specified.


     TIPS TO USING ARJ EFFICIENTLY

    You should use a software or hardware disk cache to speed up ARJ
    access.  Diskette drives should NOT be write-delay enabled.
    Write-delay would prevent ARJ from verifying diskette writes.

    When archiving to diskettes, you should use the "-w" option to set
    a working directory on your RAMDRIVE or hard disk drive to speed up
    building the archive.

    You should use the "-jt" option when archiving to diskettes or when
    you really want to be sure that ARJ will be able to extract what
    you have archived.  There are cases where your hardware or memory
    resident software will corrupt your work, so the "-jt" option is
    excellent insurance.  If you have bad sectors on your diskettes and
    verify is turned off, DOS will not tell you about diskette errors
    until it is too late.  These errors are NOT RECOVERABLE.

    Using the "-js" option saves time by not compressing archives.

    You should use the "-e" option whenever you do not need to store
    pathnames in an archive that you are creating.    This will save
    space.

    Convert an ARJ archive into a self-extracting archive with a
    command like the following:  ARJ y archive -je

    To capture a comment from an ARJ archive, use the following
    command:  ARJ e archive ... -zcomment.txt  (the "..." is
    significant).

    ARJ has several compression methods that provide size/time
    tradeoffs.  Method 4 "-m4" is about twice as fast as method 1.    The
    "-jm1" and "-jm" options modify the "-m1" and "-m2" options to
    provide even greater compression at a cost in time.


     USING ARJ WITHIN OTHER PROGRAMS

    Since ARJ uses over 300,000 bytes of memory during compression, it
    is difficult to use ARJ in a large application program unless that
    program swaps itself out of memory when it executes DOS commands
    like ARJ.  However, there is at least one shareware program
    available that will automatically swap your large application
    program out of memory whenever it shells out to DOS to execute a
    command.  The program SHROOM by Davis Augustine should be able to
    solve this memory problem for you.  The latest version as of
    03/11/92 is named SHROM19C.ZIP on Channel One BBS.  According to
    the SHROOM documentation, you can reach the author at:

        CompuServe id 72230,3053

        Davis Augustine
        P.O. Box 390178
        Cambridge, MA 02139

    This is not an endorsement of the product SHROOM.

    The easiest way I have found to use this product is to type:
    SHROOM COMMAND.COM

    SHROOM -v COMMAND.COM will let you see SHROOM in action when you
    shell out to execute a DOS command.


     ARJ FOR MS WINDOWS

    There is one program that fully supports the ARJ archive format
    with native Windows code.  That program is D'COMPRESS originally
    by Moon Valley Software.  D'COMPRESS is a Windows file manager
    program with support for archivers.  It is available from computer
    software vendors such as COMPUSA.


     ARJMENU PROGRAM

    A new program called ARJMENU by Michael McCombs will be released
    shortly.  As far as I know, it is the only menu-driven interface
    program that supports ALL of the features of ARJ.  This program is
    aimed at users who hate command line interfaces.  ARJMENU allows
    the user to pick and choose ARJ options.  The user does not have to
    remember the ARJ switch syntax.  The newest version of the program
    supports ARJ version 2.30.  You can reach the author at:

        Internet/ARPANet: [e-mail]

        Michael McCombs
        517 Ninth Ave. #310
            Seattle, WA 98104


     ARJ HELP HYPERTEXT PROGRAM

    ARJ-Help is an electronic book (brand named Window Book (TM)) that
    allows the user to discover easily how to use ARJ.  It runs under
    DOS.  It is very fast and has a rich set of features which include
    full-text search, hypertext links, a table of contents that can be
    reorganized to your needs, a complete index, and much more. The
    current version can be found on some BBSes as ARJHLP24.EXE.

        Window Book, Inc.
            P.O. Box 390697
            Cambridge MA 02139
        USA

        TEL:   [phone] or 800-524-0380.
        FAX:   [phone]


     ARCHIVER UTILITIES THAT SUPPORT THE ARJ FORMAT

    The following are some other utilities that facilitate the use of
    ARJ.  This list is not all inclusive or is it meant as a personal
    recommendation.

    ARJMENU 1.x    - ARJ shell
    SHEZ 8.x    - Archiver shell
    ARCMASTER 6.x    - Archiver shell
    ZGEN 1.x    - Archiver shell
    ACZAR 1.x    - Archiver shell
    ARJVIEW     - ARJ shell
    AVIEW        - BBS archive viewer


     USING ARJ AS A BACKUP PROGRAM

    ARJ can be used as a substitute for a backup program.  However, it
    does not have the diskette critical error handling or data recovery
    facilities of a FASTBACK, etc.    So you should be sure of the
    reliability of your diskettes.    The most common cause of failure
    is bad diskettes.  You should let ARJ test the archives ON the
    diskettes.  Testing the archives before copying them to diskettes
    is not enough.    Critical data should always be backed up two or
    more times.  Please keep in mind that damage to compressed data
    is many times more serious than damage to uncompressed data.

    WARNING:  You should never update multiple volume ARJ archives
    especially backup archives.  Use a separate set of diskettes to
    an incremental backup.

    The following partial command lines illustrate a full backup
    command, an incremental backup command, and a restore command.    The
    only parts missing are the names of the files to backup/restore.

    ARJ a A:backup -r -vvas -a1 -b2 -js -jt -jiC:\backup.inx -wC:\ -m3

    ARJ a A:backup -r -vvas -a1 -b1 -js -jt -jiC:\backup.inx -wC:\ -m3

    ARJ x A:backup -vv -y

    You should familiarize yourself with the above switches so that you
    can modify the above command lines as needed.

    If you have a RAMDRIVE large enough, you should change the "-w"
    option to point to the RAMDRIVE.

    If you have enough free hard disk space, you can build all of the
    diskette volumes on the hard disk for later copying to diskette.
    In this case, you will need to change the name of the archive to
    "C:backup" or similar.    The "-vvas" option should be changed to
    "-v360", "-v720" or whatever is appropriate for your diskette size.
    Please note that 360, 720, 1200, and 1440 are abbreviations for the
    standard diskette sizes.  Other sizes will require your entering
    the entire number.  Another change is to add the option "-y" which
    will turn off the "Ok to proceed ..." prompt.  Lastly, if the "-w"
    option is pointing to the hard disk, you should remove the "-w"
    option entirely.

    ARJ a C:backup -r -v360  <other options>   -m3 -y

    ***IMPORTANT*** Only a maximum of 100 volumes can be built on disk
    at one time because of the volume suffix rolling over at *.A99 to
    *.A00 when using default archive naming.  However, if you specify
    the starting archive name with a suffix of ".000" or ".001", ARJ
    will create up to 1000 or 999 uniquely named volumes.

    ARJ a C:backup.000 -r ...........

    Both backup commands will pause for a "system command".  You can
    execute DOS commands at this point.  This is a suitable place to do
    a "dir a:" to make sure that your disk is formatted and has enough
    free space on it.  You may need to execute "format a:" or
    "del a:\".  A very useful command might be "QDR A:".  QDR is a
    utility from Vernon Buerg.  You will need to type "exit" to allow
    ARJ to continue.

    If the backup fails after completing one or diskettes, you can
    restart at the next archive after the last successful volume.

    There are two methods to do this restart.  If you have specified an
    index file with the "-ji" option during the failed backup, you can
    restart by retyping the EXACT SAME command line as before and
    adding the "-jn" option.  This will cause ARJ to scan the
    previously written index file for the proper restart information.
    ARJ will automatically set the correct volume name.

    Example:  ARJ a a:backup c:\ -r -vvas -jiINDEX.FIL
          ARJ a a:backup c:\ -r -vvas -jiINDEX.FIL -jn

    The second method is more complicated.    Refer to the "-jn" and
    "-jx" descriptions for more details.  For example, if the above
    full backup command failed during diskette two, on filename
    "DOS\MODE.COM" which was started at byte 125.  This would be the
    correct command:

    ARJ a A:backup.A01 -r -vvas -a1 <other> -m4 -jx125 -jnDOS\MODE.COM

    The most error prone step is determining the correct "-jn" option.
    A common error concerns the use of the root directory symbol "\"
    with the "-jn" option.    Verify the presence or absence of the root
    symbol "\" in the backup index file.

    If the restore fails after one or more diskettes, simply retype the
    same command as before but add the right ".Ann" suffix to the
    archive name.  If ARJ has aborted because of a disk full on a file
    split between volumes, you will have to restart at the first volume
    that contains that file.


     BACKUP TYPE ARCHIVES AND BACKUP FILES

    New to ARJ 2.30 and ARJ archives is the concept of "backup" type
    archives.  Normally, when adding duplicate files to an ARJ archive,
    ARJ will overwrite the existing file.  However, at ARJ 2.30 with a
    backup type archive, ARJ will keep the existing file by marking it
    as a backup and inserting the new file.  This will make ARJ
    archives larger than normal.  It is possible to have more than one
    duplicate backup file.    You can make an archive a backup type by
    using the "-jb" option during the add or by typing "ARJ y archive
    -jb".  Any further additions of already existing files will result
    in more files marked as backups.  You may reset that backup flag by
    specifying the "-jb1" option as in "ARJ y archive -jb1".

    This feature is useful when backing up frequently modified files.
    One archive can have several days worth of backups.

    The existence of backup files or the backup archive flag is
    indicated when executing the "l" or "v" commands.  There will be a
    message at the end of the display.  The backup files themselves can
    be displayed by using the "-jg" or "-jg1" options with the "l" or
    "v" commands.

    To extract a specific backup file, you have several options.  You
    can execute "ARJ e archive filename -jg -q" and enter "yes" on the
    specific instance that you wanted extracted.  You can specify the
    exact modification date-time that you want as in "ARJ e archive
    filename -jg -o910101120000 -ob910101130000".  You can specify the
    sequence number of the file in the archive.  To extract the fifth
    file in the archive, type "ARJ e archive 5 -jg -#".  The sequence
    number is available in the "v" command display.  Or you can extract
    all occurrences of the file with "ARJ e archive filename -jg -jo".
    Duplicates will be renamed with numeric file extensions (.000).

    The "ARJ k archive *.*" command can be used to purge an archive of
    all backup files.

    You can unmark backup files with "ARJ y archive -jb2".    You can
    unmark specific files such as the fifth file in the archive with
    "ARJ y archive -# -jb2 5".

    You should not use the "-e" option when adding files to a backup
    type archive because ARJ will not have the ability to distinguish
    between files with the same filespec and different pathspecs.  You
    could end up with duplicate files in the archive as opposed to one
    recent file and several backup files.


     THE FILESPEC "..."

    Several times in this document and the UPDATE.DOC file, there is
    mention of the filespec "...".    This filespec is chosen so as not
    to match any existing filename.  ARJ will NOT generate an error
    or warning for not matching "..." specifically.


     ARJ ERROR SITUATIONS:

    ADD:

    If a user specified file is not found during an add, ARJ will
    continue processing, and will keep the archive and terminate with
    an error condition.  Note that files specified within an ARJ
    listfile that are not found during an add will NOT trigger an
    error unless the "-hl" option is also specified.

    In a disk full condition or any other file i/o error, ARJ will
    promptly terminate with an error condition and delete the temporary
    archive file unless the user has specified the "-jk" switch.


    MOVE:

    ARJ will only delete files that have been successfully added to the
    archive.  If you have specified the "-jt" (test) switch, ARJ will
    abort on any error.  If you specify the "-jk" switch, ARJ will not
    delete the temporary archive upon an abort.


    EXTRACT:

    In a disk full condition or any other file i/o error, ARJ will
    promptly terminate with an error condition and delete the current
    output file.


    CRC ERRORS OR BAD FILE DATA:

    In the case where an ARJ archive has been corrupted, ARJ will
    report a CRC error or a Bad file data error.  These corruptions
    can be the result of an unreliable diskette, a computer memory
    problem, a file transfer glitch, or incompatible CACHING software.
    Most of these errors are the result of file transfer glitches and
    bad diskettes.    A few are the result of an incompatible
    interaction with SUPER PCKWIK 3.3 advanced diskette support or
    Windows 3.x.


    CRITICAL ERROR HANDLER:

    ARJ sets up an interactive critical error handler to handle DOS
    critical errors like "sector not found" and "drive not ready".
    When a critical error occurs, ARJ will prompt the user with the
    message "Retry Y/N?".  The user may retry the failed operation by
    pressing "Y".  Pressing "N" will fail the operation or abort to DOS
    depending upon the version of DOS.  The user can press Control
    BREAK to abort to DOS.


     ARJ DOS ERRORLEVELS:

    ARJ returns a number of DOS errorlevels for different situations.

    0 ->   success
    1 ->   warning (specified file to add to archive not found,
            specified file to list, extract, etc., not found,
            or answering negatively to "OK to proceed to next
            volume..." prompt)
    2 ->   fatal error
    3 ->   CRC error (header or file CRC error)
    4 ->   ARJ-SECURITY error or attempt to update an ARJ-SECURED archive
    5 ->   disk full or write error
    6 ->   can't open archive or file
    7 ->   simple user error (bad parameters)
    8 ->   not enough memory
    9 ->   not an ARJ archive

    Please note that DOS batchfiles have a unique method of testing
    for a DOS errorlevel.  The batch statement IF ERRORLEVEL 0 ...
    means if the errorlevel is EQUAL TO or GREATER THAN 0.    Generally,
    one should test for the highest possible errorlevels first and
    proceed lower as in:

    ARJ a archive *.*
    if errorlevel 9 goto not_arj
    if errorlevel 8 goto no_memory
    .
    .
    .
    if errorlevel 1 goto minor_error
    type ARJ command successful


     ARJ USER ACTION PROMPTS:

    ARJ prompts the user for action at certain times.  There are
    several types of prompts.  One is for yes/no permission, another is
    for a new filename, another is for archive comments, and one other
    is for search strings.

    The ARJ yes/no user prompts provide a lot of flexibility.  In
    addition to the normal yes and no responses, ARJ also accepts the
    following responses: quit, always, skip, global, and command.

    "Global" sets ARJ to inhibit all subsequent user prompts by assuming
    YES for all queries as if "-y" were specified.

    "Always" sets ARJ to assume YES for subsequent queries of the same
    class.    For example, answering YES to the overwrite query will
    assume YES for ALL subsequent overwrite queries.

    "Skip" sets ARJ to assume NO for ALL subsequent queries of the same
    class.

    After "always" or "skip" responses, subsequent user prompt
    messages will still be output to the screen but no user response
    will be accepted.

    "Command" prompts for one DOS command and then executes it.  ARJ
    then returns to expect an answer to the current yes/no query.  You
    should keep the query in mind as ARJ does NOT always redisplay
    the full query message.

    Since ARJ uses STDIN for user input, be careful about typing ahead
    anticipating prompts.  ARJ may prompt you for an unexpected action
    and use your earlier input.

    The "-jy" option lets you change the prompting modes to single
    character query mode.  See the section on "-jy" for more
    information.


     ARJ ENVIRONMENT VARIABLE:

    ARJ will first look for an environment variable named ARJ_SW and
    use its value as switch options for ARJ.  If ARJ finds such an
    environment variable, it will display a message to that effect.

    You can inhibit ARJ from using this environment variable by using
    the "-+" option.  You can also set the name of the environment
    variable with the "-+" option as in ARJ a -+ARJ_SW2 archive.

    SET ARJ_SW=<switches>

    Example:  SET ARJ_SW=-w\temp -k -e

    Do NOT add any blanks after the variable name ARJ_SW.  As in LHARC,
    command line switches can be selected to override ARJ_SW settings.

    ARJ will allow you to use a different switch character "-" or "/"
    in ARJ_SW and in the command line except when using the "-ju"
    (unix) option.

    If the ARJ_SW environment variable specifies a filename (text not
    beginning with a switch character), ARJ will open that filename and
    scan it looking for a line of text that begins in column 1 with the
    same letter as the ARJ command being executed.    The following text
    is processed as the ARJ_SW switches.  This allows each ARJ command
    to have its own switch settings.  In addition, ARJ will also look
    for the "+" (plus) symbol in column 1 to use as a miscellaneous
    switch string.    This string will be added to any command switch
    string found if any.  If no command switch string is found, ARJ
    will use the miscellaneous switch string as the ARJ_SW switch
    settings.  NOTE that the "+" switch settings will NOT be used
    if the "+" string occurs below the command switch string.

    SET ARJ_SW=C:\ARJ\ARJ.CFG

    C:\ARJ\ARJ.CFG contains:
    a -jm1 -jt -i1
    c -zcomment.txt
    + -jv
    l -jp
    e -i1

    AND is equivalent to:
    a -jm1 -jt -i1
    c -zcomment.txt
    l -jp -jv
    e -i1 -jv
    f -jv
    v -jv
    all other commands
    .
    .
    .

    In the above example, any ARJ "a" commands will use "-jm1 -jt -i1"
    as the ARJ_SW switch options.

    The ARJ_SW variable or the ARJ_SW configuration file switch
    settings may NOT have quoted switches such as "-vasformat a:".


     ARJ COMMAND LINE SYNTAX:

    ARJ <command> [-<switch>[-|+|<option>]...] <archive_name>[.ARJ]
    [<base_directory_name>\] [<!list_name>|<path_name>|<wild_name>...]

    Commands and switches can be entered in upper or lower case.
    Switches can be placed anywhere after the command ARJ.

    ARJ supports the use of either "-" or "/" as the switch option
    character.  The first occurrence of either "-" or "/" that ARJ
    encounters in the ARJ_SW variable will determine the switch symbol
    for processing ARJ_SW.    The first occurrence of either "-" or "/"
    that ARJ encounters in the command line will determine the switch
    symbol for processing the command line except when the "-ju" (unix)
    option has been specified in ARJ_SW.  You may NOT mix and match
    switch symbols.  Throughout this document, the symbol "/" may be
    substituted for "-" in switch usage.

    Examples:  ARJ a A:archive *.* /va /r     is correct
           ARJ a A:archive *.* /va -r     IS INCORRECT USAGE!

    Switches specified on the command line will either toggle or
    override switches specified with the ARJ_SW environment variable.
    Switch usage is identical to that of LHARC.

    "-s+"         turns on switch "s".
    "-s-"         turns off switch "s".
    "-s"         toggles the state of switch "s".
    "-sname"     provides the name argument for switch "-s".
    "--"         skip processing of any more switch options.

    Switch options CAN be combined to save command line length.
    However, some switch options take optional string arguments and
    therefore, must be the last option in a combined argument token
    string because ARJ accepts the rest of the argument token as the
    optional argument.  You can combine "-r" and "-i" to make "-ri".
    You can combine "-wd:\" and "-i" with "-iwd:\", because the switch
    option taking the string argument is last.  Please note that
    switches that ONLY accept the "+", "-", "0", "1", "2" modifiers can
    be combined in any order.  The following switches must be last in a
    combined switch argument:  -g, -l, -m, -o, -t, -v, -w, -x, -z, -!,
    -$, -hc, -hx, -jc, -jd, -jh, -ji, -jn, -jp, -js, -jw, -jx, -jy, -jz.

    WARNING:  The "j" in "-jX" option switches is a SHIFT symbol.
    Therefore, a combined "-jatv" is a combination of "-ja", "-jt", and
    "-jv", since the "j" shifts the meaning of subsequent symbols in
    the argument token string.  The use of more than ONE "j" shift
    symbol per argument token string is NOT supported for future
    versions.

    Examples:  -rijvta   <=>  -r -i -jv -jt -ja
           -i1kwd:\  <=>  -i1 -k -wd:\

    ARJ will accept an ending "-" on most switches such as "-w-".  The
    "-x" switch option is one exception.  The one caveat is that for
    switches that support an optional argument such as "-wd:\" or
    "-t1", that switch option must NOT be followed by a concatenated
    switch option such as "-w-r".  An argument token string such is
    "-rikw-" is acceptable because the "-w" option is the last one.
    One special switch combination is the "-jyyr" combination.  You can
    turn off the "y" and "r" modifiers with "-jyyr-".

    The switch option "--" tells ARJ that there are no more switch
    options to process in the current command line.  This is useful
    when you need to enter filenames beginning with "-".

    Example:  ARJ a archive -- -testfile

    The standard ARJ file suffix is ".ARJ".  Subsequent multiple volume
    archives end in ".A01", ".A02", etc, up to .A99, .A00, .A01.  It is
    possible to have multiple volumes start at ".001" and go up to
    ".999".

    The ARJ command must be the first non-switch argument after "ARJ".
    The ARJ archive name must be the first filename on the command
    line.  The base directory, if any, must be the second filename
    argument.  The switches and other filenames can be in any order.
    The base directory name should end with "\" (backslash) or ":"
    (colon).  However, ARJ will still accept directory names without
    the "\" character if the directory already exists.  This feature
    is limited to the add type and extract type commands.

    Wild_names follow MS-DOS convention.  "*.*" means all files.
    "*.DOC" means all files with an extension of ".DOC".  "?B*.*"
    means all files with a second character of "B".

    The default for <wild_name> for all commands except for "d" is
    "*.*".

    For the add, move, freshen and update commands, filename matching
    in the archive requires an exact path match depending upon the "-e"
    option.  For non-update commands, specified filenames with paths
    will force a full pathname match.

    You can supply one or more filenames for files containing lists of
    files to be added to an archive.  The filenames must be listed one
    per line with no leading or trailing blanks.  The list filename(s)
    must be prefixed with "!".  If you want to archive a filename
    beginning with !, you must use the "-!" option to set a new list
    file character.

    You can exclude filenames/wildnames from the list of filenames to
    be processed by ARJ.

    Example:  ARJ a software *.* -x*.exe -x*.obj   adds all files
    in the current directory except .EXE and .OBJ files.


     ARCHIVE NAME WILDCARDING:

    You can specify a wildcard for the archive name such as "*.ARJ" for
    all ARJ commands except for the add commands (a, f, j, m, u).  If
    you also specify the "-r" switch,  ARJ will search subdirectories
    for ARJ archives (*.ARJ) also.

    Example:  ARJ l -r *         will list all of your *.ARJ files.
          ARJ c *.arj -zbbs.cmt  will comment all of your archives.


     ARJ COMMANDS:

    a: Add files to archive

       This is the basic command to add disk files to an ARJ archive.
       You can specify 0 to 64 filename arguments (one can be a
       destination directory).  The arguments can be wildnames.  If
       you specify the "-r" switch (recurse subdirectories), ARJ
       will add all of the files in all of the subdirectories that
       match the specified wildname.

       Example:  ARJ a archive subdir\*.*
             Archive all files in directory "subdir".

       For maximum compression, use the "-jm" switch option.

    b: execute Batch or DOS command

       The ARJ b command allows a user to execute a DOS command on
       selected files in an archive.  The ARJ b command will prompt for a
       DOS command string to execute per selected file.  By default ARJ
       will extract the selected files to the filename ARJTEMP.$$$.  This
       filename can be changed with the "-jw" option.  The base directory
       option is ignored by the ARJ b command.  The output file will be
       deleted by ARJ after the DOS command is executed.

       Examples:  ARJ b archive
              ARJ b archive file.exe -jwtemp\tempfile

       This option can substitute for a simple extract and run command
       where the file to be extracted is an executable.  You would specify
       a temporary executable name as the output name and use that name as
       the DOS command to be executed.

       Example:  ARJ b archive file.exe -jwTEMP.EXE
             TEMP arguments

       You can supply the DOS command string on the command line with
       the "-jq" option.  Switch options which have embedded blanks
       must be enclosed by double quote marks.

       Examples:  ARJ b archive file.exe -jwTEMP.EXE -jqTEMP
              ARJ b archive *.c "-jqgrep text ARJTEMP.$$$"

    c: Comment archive files

       This command allows you to comment the header and individual
       files.  ARJ will prompt you for each comment.  The user will be
       prompted for up to 25 lines for each comment.  A line containing
       only a [return] will terminate the comment.

       The user can choose to input comment data from a file by entering
       the comment filename preceded by an "!" as in "!archive.txt"
       starting in column 1 of the first comment line.  This file is
       read as a text file.  The lines in the text can be up to 2048
       bytes long.    Only the first 2048 bytes of the file will be
       accepted by ARJ.

       To erase a comment from an archive, type [space] [return] on the
       first comment line and [return] on the second comment line.

       To strip archive or file comments from an archive, you can use
       the NUL file feature of MS-DOS.

       Examples:  ARJ c archive -zNUL       strips archive comment
              ARJ c archive name -jzNUL    strips comment for "name"
              ARJ c archive -jzNUL       strips all file comments
              ARJ c archive -zNUL -jzNUL   strips all comments

       To add only the archive comment and not file comments, use the
       following command:

       ARJ c archive -z

       To add only the archive comment at the command line, use the
       following command:

       ARJ c archive -zcomment.txt

       You may also comment an archive with the "a", "f", "m", "u"
       commands.

       ARJ a -zcomment.txt archive *.txt

    d: Delete files from archive

       This command allows you to delete files from the archive.  When
       wildcard selection is not suitable, you can use the "-q" switch
       to set ARJ to prompt you for deletion for each file selected.
       These deleted files are physically removed from the archive.

       Example:  ARJ d archive *.c
             Delete all files in archive ending in ".c".

             ARJ d -q archive *.c
             Prompt before deleting each file ending in ".c".

       Currently, ARJ never deletes the archive even when it is empty.

    e: Extract files from archive

       This command will extract one or more files from the archive to
       the current directory or base directory if specified.  ARJ will
       prompt the user before overwriting existing files unless the
       user specifies the "-y" switch.  If the user gives a "no"
       answer, ARJ will prompt for a new filename.    If the user enters
       a single [return] instead of a filename, ARJ will skip the
       current file extraction.

       Example:  ARJ e archive soft\ *.c
             Extract all files ending in ".c" to subdirectory
             "soft".

       When extracting a file located on multiple volumes, ARJ may
       prompt the user with an "Append? " prompt.  This will usually
       occur with files split across volumes.  You will also need to
       specify the "-v" switch to set ARJ to continue to the next
       volume of a series of volumes.  When extracting from one of a
       series of multiple volumes on a diskette, it is easier to use
       the wildcard "*.*" to specify the archive as in:

       ARJ e archive A:*.* filespecs

       If you wish to extract only a portion of an archive and that
       portion is a directory containing directories, you should use
       the "-p1" switch.  See the "-p" switch for more information.

       The ARJ e and ARJ x commands now accept the "-d" option to
       provide an extract and delete option.  This feature requires
       that you specify the files to extract and delete.  ARJ will NOT
       default to "*.*" for this option.  This option actually uses
       more disk space than a simple extraction because of the
       temporary archive that is created during the extraction process.

       ARJ e archive -d file1 file2

       If ARJ encounters a disk full during extraction, ARJ will abort
       with an error.  You can bypass the abort by using the "-jd"
       option.  Refer to the description of "-jd" for more information.

       If ARJ encounters a CRC or Bad file data error during
       extraction, ARJ will delete the corrupted extracted file unless
       the "-jr" option is used.

    f: Freshen files in archive

       Update matching files in the archive that are OLDER than the
       selected disk files.

       Example:  arj f archive *.c *.h

       In freshening archives, you should use the same filename
       specifications that you used to create the archive.

       Example:  arj a archive \temp\ *.* -r
             arj f archive \temp\ *.* -r

       If no files or comments have been added to the archive, ARJ
       will not rewrite the archive at ARJ 2.20 and above.

    g: Garble files in archive

       The ARJ "g" command allows a user to garble an already built ARJ
       archive.  Please note that only ungarbled files will be garbled
       by the ARJ "g" command.

       Example:  ARJ g archive -gdinosaur

    i: check Integrity of ARJ.EXE

       The "i" command allows the user to check the integrity of the
       ARJ.EXE program.  ARJ will report "CRC ERROR!" if the tested ARJ
       program does not pass its integrity check.  This indicates that
       the program is probably corrupted.  Please note that the "i"
       command should not be used on a compressed ARJ executable
       (DIETed, LZEXEd, etc.), since the "i" command will then ALWAYS
       report a CRC error.    If the program name is not specified, then
       ARJ will check the current program being executed.

       Syntax:  ARJ i ARJ.EXE
            ARJ i         at DOS 3.0 and up

    j: Join archives to archive

       The "j" command allows the user to merge several ARJ archives.

       Syntax:  ARJ j archive archive1.arj archive2.arj
            ARJ j archive *.arj -r

       Some switches NOT supported by the "j" command are:    -o, -ob,
       -f, -u, -c, -v.  Note that there is no error message displayed
       by ARJ when using an unsupported switch with the "j" command.

       The "-d" option IS supported by the "j" command.

       Note that switches that do work like "-x" select the archives to
       be merged and NOT the contents of the archives.

       This command can be used to convert an SFX module to a regular
       ARJ archive.

       Example:  ARJ j new_name arjsfx.exe

    k: pacK bacKup files in archive

       The ARJ k command works similar to the ARJ d command except that
       the ARJ k command only deletes files marked as backups.  The ARJ
       k command requires a wildname or filespec as a selection option.

       Examples:  ARJ k archive *.*
              ARJ k archive *.doc -q

    l: List contents of archive

       List contents of archive to standard output.  The display can be
       paused after each screenful with the "-jp" switch.  The files
       are listed in stored order.    There are no sort options
       currently.

       The last field on the display BTPMGVX stands for:
           B -> file has been marked as a backup
           T -> text/binary/directory type
           P -> path information available in "V" listing
           M -> compression method used
           G -> file has been garbled (encrypted)
           V -> archive has been continued to another volume
           X -> this file is an extended portion of a larger file

       Example:  arj l archive *.c *.h

       A "+" sign preceding the date-time field indicates that the date
       is a 21st century date (20nn).

       For text mode compression, the original file size reported by
       the "l" and "v" commands is the actual number of bytes input.
       This is usually the MS-DOS file size minus the number of
       carriage returns in the file, since C text mode strips a file of
       carriage returns.

       When ARJ has detected a set backup flag in an archive, there
       will be a message "[Backups ON]".  When ARJ has detected any
       backup files in an archive, there will be a message
       "[Backups found]".

       To indicate that files are marked as backups, ARJ will display
       a "*" in the column right after the file attributes.

       The "-jg" option is needed to set the "l" and "v" commands to
       display the names of backup files.

       Example:  ARJ l archive -jg

    m: Move files to archive

       This command is similar to specifying the "a" command with the
       "-d" switch.  The "m" commands adds the selected files to the
       archive.  If the adds are successful, then the added files are
       deleted.  The move command does not ask permission before
       deleting the files.    Use the "ARJ a -d" command for that
       feature.

       Example:  ARJ m archive soft\*.*

       The "m" command when used with "-f" and "-u" will delete any
       successfully added files as well as any files that are already
       up to date in the archive.  It is STRONGLY suggested that you
       always use the "-jt" option with move commands to set ARJ to
       verify the archive before deleting the input files.

       At ARJ 2.30, ARJ will also attempt to delete any directories
       that are added to the archive.  Directories can ONLY be selected
       by using the "-a1" option.  Directories with UNSELECTED files
       will not be deleted.

       Example:  ARJ m archive -a1 soft\*.* soft   deletes soft
             ARJ m archive -a1 soft\*.*        doesn't delete soft

    n: reName files in archive

       This command allows you to change the names of the files stored
       in an ARJ archive.  ARJ will prompt for the new name of each
       selected file.  You can skip changing the name of a particular
       file by entering a blank line.

       Example:  ARJ n archive *.c

       In the above example, ARJ prompts for new names for all *.c
       files.

    o: Order files in archive

       This command allows you to re-order the files within the
       archive.  You may specify the order of files on the command line
       or you can use one or more list files.  Any files in the archive
       that are not specified on the command line or in a list file
       will be placed at the end of the archive in the same relative
       order that they were originally.  No wildcard names can be used
       as order specifications.  The filenames in the list file must be
       entered one per line.

       Example:  ARJ o archive file1 file2 file3

       In the above example, the files "file1", "file2", and "file3"
       will be ordered first in the archive.  Any remaining files will
       follow those.

       Example:  ARJ o archive !list

       In the above example, the archive will be ordered according to
       the order of the names in the file "list".

       IMPORTANT:  For the "o"rder command, the list file option has
       one special feature.  If the list file is named ARJSORT.$$$, ARJ
       will expect the file to have been built with the ARJ v -jv1
       command.  This ARJSORT.$$$ list file may be specified with a
       pathspec.  See the ARJSORT.BAT batch file for an example of this
       special feature.

       To facilitate building list files, the "v" command in ARJ will
       produce special outputs with the "-jv" switch and the "-jv1"
       switch.

       The "-jv" switch will display only the pathnames stored within
       the archive.  No other listing data is displayed.  This output
       can be re-directed to a file for manual sorting into a list
       file.

       The "-jv1" switch will display the standard verbose display with
       a few modifications.  No sequential number field will be
       displayed.  No comment field will be displayed.  The pathname is
       appended to the archive file description data instead of being
       on a separate line.    Displayed just before the pathname field
       are the file extension and filename.  These fields are available
       so that the user can sort the text lines by date-time, file
       extension, CRC value, etc.  Text editors like Qedit and SLED
       allow the user to sort text lines via an embedded text field.

       At ARJ 2.20 and above, you cannot "o"rder a multiple volume
       archive and should not.

    p: Print files to standard output

       Output files to standard output.  This function works such that
       the output file will contain only the file data extracted.  This
       is important for UNIX-like usage.

       Example:  ARJ p archive manual.doc > output.fil

       In the above example, output.fil will be an exact copy of
       manual.doc.    There will be no extraneous header information in
       output.fil.    All extraction phase information is written to the
       STDERR device, which is normally the display screen.

       Example:  ARJ p archive manual.doc > LPT1

       In the above example, the standard output is redirected to the
       printer device.  This does not involve any intermediate disk
       files.  However, when redirecting to the printer, ARJ will
       translate binary files to text, causing possible loss of data.
       The ARJ command "ARJ e archive manual.doc -jwLPT1" will output a
       binary file to the printer without loss of data.

       ARJ sets the file date-time stamp of the output stream.  File
       viewing as in ARJ p archive name | LIST /s will display the
       correct file date and time.

       The "-jp" option can be used to pause the screen output as in the
       "s" command.  The "-jv" option will allow the display of IBM
       graphics characters with the "-jp" option.

       NOTE:  Because of a problem using fwrite() and STDOUT, errors
       occurring during redirection to serial and printer ports may not
       be detected.  Errors during redirection to disk files will be
       detected.

    r: Remove paths from filenames

       This command sets ARJ to remove the path component from the
       specified filenames stored in the archive.  The default is all
       filenames stored in the archive.  This command is useful if you
       forgot to specify "-e" to exclude paths.

    s: Sample files to screen with pause

       This command is similar to the "p" command except that one
       screenful of data is displayed to the user and a user action is
       then requested.  The action prompt can be suppressed with the
       "-y" switch.

       The "s" command filters the text to output by truncating at 79
       characters per line and displaying '?' for control characters.
       The "-jv" option will allow the display of IBM graphics
       characters.

    t: Test integrity of archive

       Test the contents of the selected files for the correct CRC
       value.  ARJ uses a 32 bit CRC to validate the contents of the
       files.  The use of 32 bit CRCs is many times better than the
       use of 16 bit CRCs for the detection of errors.

    u: Update files to archive

       Update older files in the archive and add files that are new to
       the archive.

       Example:  arj u software

    v: Verbosely list contents of archive

       This command lists the full pathname and comments of the archive
       files as well as the same information as the "l" command.

       The "v" command now displays a sequence number preceding the
       pathname.  This number can be used with the "-#" option to
       access specific files within an archive.

       Example:  ARJ v archive -jg
             ARJ x archive -# 5 10

       Use the "-jp" switch to pause the output after each screen.

       The "-jv" switch will display only the pathnames to the screen.

       The "-jv1" switch will display the archive data in a manner
       suitable for sorting on various fields for use with the "o"
       command.

    w: Where are text strings in archive

       This command allows the user to search for text strings within
       archives.

       ARJ will prompt the user whether to ignore case when searching.
       This search option takes MS-DOS code pages into account so that
       casing of accented/umlauted characters will be done correctly.

       ARJ will also prompt the user for the number of lines of context
       of a match to display.  If a number greater than zero is chosen,
       ARJ will display the matched string and the surrounding context
       with all of the non-printable characters including newlines
       replaced by question marks.    The context lines displayed will be
       78 characters in length.  When the display context option is
       chosen, ARJ will inhibit the progress indicator.  If the "-jv"
       is set, IBM graphics characters (128 to 255) will be displayed.

       Then, this command will prompt the user for up to 20 text strings
       to search for within the archive.  A count of all matches will be
       displayed after each individual file is scanned.

       Search strings are limited to 79 characters.

       Matches that span archive volumes will not be detected by
       this string search.

       You can search multiple ARJ archives with a command like:

       ARJ w \docs\*.arj

       You may page pause the display with the "-jp" option.

       The "-jq" option can be used to supply the necessary parameters
       to the ARJ w command.

       The option string will be parsed as follows:
       1) the first character must be either "+" or "-" representing
          yes or no,
       2) the next character(s) represents the number of lines of
          context to display,
       3) the next character represents a non-digit separator,
       4) the next characters represent the search text.

       Examples:  ARJ w archive -jq+3+total    caseless search
                           display 3 context lines
                           search for "total"
              ARJ w archive "-jq-2-to be"  case sensitive search
                           display 2 context lines
                           search for "to be"

       You can use the "-hw" options to change the way ARJ displays
       the filenames being searched.

    x: eXtract files with full pathname

       This command extracts one or more files from the archive to
       their full paths in the current directory or to the base
       directory if specified.  ARJ normally stores pathnames as if
       they were children of the target directory.    Any drive or root
       directory specifications are stripped before extracting unless
       the "-jf" switch is specified with the "x" command.

       Example:  arj x archive *.c

       If you wish to extract only a portion of an archive and that
       portion is a directory containing directories, you should use
       the "-p1" switch.  See the "-p" switch for more information.

       The ARJ e and ARJ x commands now accept the "-d" option to
       provide an extract and delete option.  This feature requires
       that you specify the files to extract and delete.  ARJ will NOT
       default to "*.*" for this option.

       Refer to the description of the "e" command for more
       information about extraction.

    y: copY archive with new options

       The ARJ y command provides an easy interface to the -je and
       -je1 options as well as to the -jb, -jb1, and -jb2 options.

       Examples:  ARJ y archive -je1  convert an archive to an SFX
              ARJ y archive -jb   make an archive a backup type
              ARJ y archive -jb1  reset the backup flag
              ARJ y archive -jb2  unmark all backup files


     ARJ SWITCH OPTIONS:

    ?: Display full help screens

       The command "ARJ -?" displays several screens of help
       information with page pauses.  The command "ARJ -? -jp" displays
       the help screens without page pauses.  You can also redirect the
       output to a file as in:

       ARJ -? > help.txt

       ARJ may not detect network file redirection and will pause per
       screenful.

    -: skip any more switch options

       The switch option "--" will cause ARJ to stop looking for any
       more switch options on the command line.  This is useful for
       entering filenames beginning with "-".

       Example:  ARJ a archive -- -file

    +: inhibit ARJ_SW usage

       The switch option "-+" will inhibit ARJ from using the value of
       the ARJ_SW variable in ARJ switch processing.

       Example:  ARJ a archive -+ *.*

       The "-+" option can now be used to specify an environment variable
       name to use in place of the default "ARJ_SW".  This option can only
       be used on the command line.

       Example:  ARJ a archive -+ARJ_SW2

    &: install critical error handler

       By default, ARJ sets up a default interactive critical error
       handler to handle errors like "sector not found" and "drive not
       ready".  The user has the option of retrying the failed
       operation.  The user can press Control BREAK to abort to DOS.

       The "-&" option sets ARJ to install a non-interactive critical
       error handler.  This is designed for unattended ARJ use.  This
       handler will intercept errors that produce the "Abort, Retry ..."
       error messages like bad sector errors and file sharing
       violations.    It can be specified on the command line or via the
       environment variable.  Please note that if you specify "-&" on
       the command line, the handler is installed immediately before any
       files are processed.  If you specify "-&" in the environment, ARJ
       will not install the handler until all switches are processed.

    !: set list char

       This option allows the user to set the character used for list
       files.  The option "-!" with no specified character toggles
       (turns off) the current list file character (default "!").

       Syntax:  ARJ a archive -!@ @list.fil
            ARJ a archive -! !.bat

       The first example above sets the list file character to the one
       used by LHA and PKZIP.

    $: add/extract volume label

       This option allows the user to store or extract DOS volume
       labels in ARJ archives.  It is possible to have multiple labels
       in one archive.  At ARJ 2.10 and above, you can only add or
       extract volumes labels at DOS 2.0 and above.  The "-$" option
       may be specified with or without a drive specification.  The
       drive can be specified by appending the letter and optionally
       the ":" to "-$".  If none is specified, ARJ assumes the current
       drive unless a specified target base directory has a drive
       specification.

       WARNING:  Currently, ARJ allows more than one volume label and
       duplicate volume labels in the same archive.  You can delete one
       or more duplicate labels with the "ARJ d -q archive label"
       command.  ARJ will query you on each occurrence of "label".
       This "faulty" mechanism allows a file and label of the same name
       to be added to an archive.  The capability of having duplicate
       labels in the same archive MAY NOT be present in future versions
       of ARJ.

       The SFX and SFXJR modules DO NOT support volume label extraction!

       On the list screen, volume labels will be indicated by the "V"
       under the "T" column.

       Syntax:  ARJ a archive -$           add all files and the label
                           of the current drive.
            ARJ a archive ... -$B      add only the label of drive B
            ARJ a archive ... -$B:     add only the label of drive B
            ARJ u archive ... -$B:     add only the label of drive B

       To extract volume labels, you must select the label by setting
       "-$" and specifying a matching wildname/filename.

       Syntax:  ARJ e archive doslabel -$  extract the label named
                           doslabel to the current drive.
            ARJ e archive -$D:           extract all files to the
                           current drive and extract the
                           label to drive D:.
            ARJ e archive label B:\ -$ extract all files to B:\ and
                           the label to drive B.

       ARJ will display all labels over 8 characters with a "." in it
       like a normal DOS filename.    However, ARJ will not restore this
       extra "." when extracting.  ARJ will only create standard
       uppercase DOS volume labels.

       Volume labels created by utilities other than standard DOS
       commands like LABEL and FORMAT may cause label access problems
       for ARJ.  For example, Norton's VL.EXE can create labels with
       lowercase letters.  You will need to use LABEL.COM to delete
       these labels in order to let ARJ set a new label.  Programs that
       delete unusual labels must do absolute writes to disk or use a
       wildcard ("*.*") delete of files with the label attribute in the
       root directory.  A single bit corruption in the program can
       result in the deletion of ALL files in the root.  ARJ currently
       chooses not to take that risk.

    #: select files by order number

       The "-#" option allows the user to select files from an archive
       by their order number in the archive.  For example, the number 1
       selects the first file in the archive.  This option is useful in
       selecting files where there are duplicates in the archive.  It
       is also useful for batch type utilities that need to extract
       files sequentially from an archive for processing.  Archive menu
       programs should find this option very useful in processing
       archives with duplicate filenames.

       You can specify a series of files with the n1-n8 type syntax.
       No embedded spaces are allowed.

       ARJ e archive -# 1 4 12-25 40-100

       NOTE that the order number starts from 1 for each individual
       archive including multiple volume archives.    In other words, the
       first file in archive.a04 is number 1.

       Do NOT mix filenames with the numbers other than the base
       directory.

       Example:  ARJ e -# archive basedir\ 1 3 5 20 21

    a: allow any file Attribute

       By default ARJ will not select system or hidden files via
       wildcarding unless the "-a" option is specified.

       The "-a1" switch sets ARJ to add any directories in the selected
       set of matching filespecs to the archive being built.  This
       switch also selects hidden and system files as in the "-a"
       switch.  Even empty directories will be added.  The "l" command
       will display such directories with a "D" under the "T" (file
       type) header.

       Older releases of ARJ will skip over empty directory entries.
       The ARJSFX and ARJSFXJR modules CAN process empty directory
       entries.

       This option is useful for saving software directories with
       needed empty directories.

    b: Backup changed files

       The "-b" switch will select only files that have the archive bit
       set.

       If you specify the "-b1" option, files with the archive bit set
       will be selected and the archive bits of all archived files will
       be reset after a successful archive has been built.

       Example:  arj a a:backup1 c:\*.* -b1 -r -va     simulates BACKUP
       command.

       The "-b2" switch does NOT select files.  It causes ARJ to reset
       the archive bits of added files.  If the "-f" or "-u" option has
       been selected, ARJ will reset the archive bits of files that are
       already duplicated in the archive.

       Example:  arj a e:archive c:\*.* -b2 -r    archives all files on
       the C drive and resets all archive bits.

       The "-b3" switch is used to reset the archive bits of files
       being extracted.  It is useful for setting the archive state so
       that a subsequent incremental backup will not backup these
       extracted files.

    c: skip time-stamp Check

       Normally with the "u" and "f" commands, ARJ will only update
       newer files to an archiver.    The "-c" switch will set ARJ to
       update the archive regardless of the date-time modified time
       stamps.

       When extracting files from an archive with the "-y" and "-f"
       switches set, ARJ would normally skip extracting older files.
       The "-c" switch will set ARJ to extract these older files.

    d: with Delete (move)

       This switch provides the standard MOVE command.  Successfully
       added files will be deleted.  When used with the "-f" or "-u"
       option, ARJ will also delete files that are already duplicated
       in the archive.  ARJ will prompt the user before deleting the
       files unless the "-y" switch is specified.  Also, you can use
       the "m" command which does not prompt before deleting the files.
       At ARJ 2.30, when using the "-a1" to specify the selection of
       directories, ARJ will also delete the selected directories.

       ARJ a archive filename -d -y       is equivalent to

       ARJ m archive filename          and

       ARJ a archive filename
       delete filename

       The ARJ e and ARJ x commands now accept the "-d" option to
       provide an extract and delete option.  This feature requires
       that you specify the files to extract and delete.

       ARJ e archive -d file1 file2

    e: Exclude paths from filenames

       By default ARJ always stores the pathname of the archived file.
       This switch will set ARJ to store only the filename component.

       The "-e1" switch option sets ARJ to NOT store the base directory
       name with the filenames in the archive.

       Example:  ARJ a archive C:\SOFTWARE\ARJ\ *.* -r -e1

       In the above example, ARJ will NOT store the C:\SOFTWARE\ARJ\ as
       part of the filenames.

       When updating files within an archive, ARJ uses the full
       pathname to match against the full name of the selected files.
       The "-e" and "-e1" option affect this exact matching.  If "-e"
       is specified, only the filespecs of the selected files will be
       matched against the full pathname of the files in the archive.
       If "-e1" is specified, the full pathname minus the base
       directory of the selected files is used to match against the
       full pathname of the files in the archive.

       In other words, ARJ will only update a file within an archive if
       the name of the new file as stored in the archive would be
       identical to the name of the original file stored in the
       archive.

    f: Freshen existing files

       This switch used with the "e" or "x" commands sets ARJ to only
       extract newer files from the archive.

       This switch used with the "m" command sets ARJ to update only
       input files with newer dates than the ones in the archive.
       After the archive has been updated, all updated selected files
       and all up to date selected files will be deleted.

       The ARJ m -f command is very similar to the LHARC m command.

    g: Garble with password

       This switch followed by a password "-gpassword" will encrypt or
       decrypt an archived file.  During a "l" or "v" command, a
       garbled file will display a "G" after the method number.

       Example:  ARJ e archive -gpassword

       If the "-g" option is followed by a question mark "?", ARJ will
       prompt the user for the password without displaying the password
       input.  The backspace key can be used to erase characters.

       Example:  ARJ a archive -g?

       Using the wrong password during extraction will result in a
       "Bad file data" or "CRC error" error message.

    i: with no progress Indicator

       Do not display the percentage progress indicator.  The progress
       indicator appears during the add, extract, search, and test
       operations.

       The "-i1" option provides a bar type graphical progress
       indicator for the compression, extraction, and testing type
       commands of ARJ.  This provides an alternative to the simple
       numeric increasing percentage progress indicator.

       The "-i2" option provides a combined percentage and bar progress
       display.

    j: selects alternate set of switch characters.

       This switch toggles the set of switch characters.  The toggle is
       reset at end at of each separate switch sequence back to the
       main set of switch characters.

       For example, "-ja" is not the same function as "-a".  However,
       "-jja" is the same as "-a" because of the double toggle.  Also,
       "-jaje" is NOT the same as "-ja -je".  The switch sequence
       "-jae" is the same as "-ja -je".

    k: Keep a .BAK of ARJ archive

       Create a ".BAK" of the original archive file during an update.
       The original archive will be suffixed with ".BAK".  Any existing
       ".BAK" file will be overwritten.

       This has no relation to "backup type" ARJ archives.

    l: create List_name file

       This switch will set ARJ to dump to the filename specified after
       the "-l" switch all of the filenames to be processed by this ARJ
       command.  For add type commands, this list contains all files
       that matched the file wildnames given on the command line.  For
       other commands, the file will contain only the original
       filenames and/or wildcard names.  Other options do NOT affect
       the output of filenames to this list file.  To get an index file
       for backup purposes, use the "-ji" option.

       This list file can be used as a listfile on the command line.

       Example:  ARJ a -lname.lst archive *.exe

       This example will create a file named "name.lst" with all *.exe
       files.

    m: with Method 0, 1, 2, 3, 4

       Method 0 = storing    (no compression)
       Method 1 = best compression for general use
                (default compression method)
                (requires 300,000 plus bytes memory)
       Method 2 = slightly less compression and faster
                (requires 282,000 plus bytes memory)
       Method 3 = less compression and less memory and faster
                (requires 250,000 plus bytes memory)
       Method 4 = fastest compression
                (requires 235,000 plus bytes memory)

       Example:  ARJ a archive *.exe -m2

       The "-jm" option will usually improve the size reduction of
       methods 1 and 2 at the cost of speed and memory.  The behavior
       of "-jm" with -m3 and -m4 is UNDEFINED.

       Method 4 uses a different decoder than 1 to 3.  Method 4 is
       almost twice as fast as method 1.

       During extraction, ARJ uses less memory than during compression.
       See the section on ARJ LIMITATIONS for more memory usage
       information.

    n: only New files (not exist)

       With the "e" or "x" commands, extract files that do not exist in
       the target directory.

       With the "a" or "m" commands, archive files that do not exist in
       the target archive.

    o: On or after date YYMMDDHHMMSS

       The switch "-o" by itself means select files modified today.  If
       "-o" is followed by a date and optionally a time, ARJ will only
       select files modified on or after that date-time.

       Example:  ARJ a test -o9001021700    means select files modified
       on or after Jan 2, 1990, 5:00 PM.

       Years less than "80" will be considered as 21st century years.

       There is no option for using other date-time formats.

       The switch "-ob" selects files modified before today.  If "-ob"
       is followed by a date and optionally a time, ARJ will only
       select files modified before that date-time.

       ARJ now accepts the use of "-o" and "-ob" options simultaneously
       to specify a range of selected dates.  This is useful for
       selecting files on a specific date.

       Example:  ARJ a archive *.* -o910101 -ob910102

       The "-o" option and/or the "-ob" option will default to today's
       date at midnight (0000 hrs) when specified without dates.

       The "-od" switch sets ARJ to select files no older than the
       specified number of days.  The days are calculated from
       midnight.

       Examples:  ARJ a archive -od0    select files modified today
              ARJ a archive -od1    select files modified yesterday
                        and today

    p: match using full Pathnames

       When "-p" is specified, ARJ looks for an exact pathname match.
       This can be modified by the "-e" option.

       For non-update commands and specified filenames with paths, ARJ
       will match the full path with or without the "-p" switch.

       To match directory paths that contain subdirectories, you should
       use the "-p1" switch.  This switch sets ARJ to match only the
       initial portion of the pathnames against the wildnames
       specified.  For example, if your archive contains the TURBOC++
       directory named TC and you wish to extract the INCLUDE
       subdirectory along with the subdirectory INCLUDE\SYS, you can
       use the following command:

       ARJ e archive TC\INCLUDE\*.* -p1

       If you wanted to extract all of the INCLUDE\S*.* files including
       the contents of the SYS subdirectory, you can use the following
       command:

       ARJ e archive TC\INCLUDE\S*.* -p1

    q: Query on each file

       This switch causes ARJ to prompt the user prior to acting upon
       each archived file for all but the "j", "l", "t", "v", and "w"
       commands.  This allows you selectively to delete, add, etc.

    r: Recurse subdirectories

       This switch will set ARJ to recurse any wildcards specified on
       the command line including ARJ archive filenames by traversing
       all subdirectories scanning for matches.

       ARJ will also recurse non-wildcard filenames as in:
       ARJ a archive FILE.BBS -r

    s: set archive time-Stamp

       This switch causes ARJ to set the date-time stamp of the archive
       to that of the newest file in the archive.

       This option will also work with non-update commands as in:
       ARJ l archive -s ...

       The "-s1" switch is used to keep the old archive date-time
       stamp.  The new archive will have the same timestamp as the
       original archive.

       The "-s2" switch is like the "-s" switch except that it only
       works for archive modification commands.  This makes it more
       suitable for use in the ARJ_SW environment variable.

    t: set file Type

       This switch causes ARJ to open and read the file to be archived
       in binary or text mode.  The default is binary mode (-t0).  To
       archive in text mode, use the -t1 switch.  The "-t" switch is
       equivalent to "-t0".

       If you specify the switch "-t0", ARJ will always use the binary
       mode even for freshening text mode files already in the archive.

       The file type "text" is only needed for future cross platform
       transfers of ARJ archives.  It enables ARJ to extract text files
       to the host file system with the text newline sequence that is
       correct for that operating system.

       However, this mode may produce slightly better size reduction.
       The "-t1" option combined with "-jh65000" can produce some of
       the best size reduction numbers.  Extraction of files compressed
       in text mode is slower than the extraction of binary files.

       You should NOT use the "-t1" switch while archiving in multiple
       volume mode.

       DO NOT use the text mode on non-text files!!!  On non-text files
       ARJ will prematurely stop input if it finds an embedded EOF
       character (CTL Z).  This will produce a LOSS of data on binary
       files.  As of ARJ 2.30 and UNARJ 2.30, ARJ will extract text
       mode data in 8-bit format when extracted to the original type of
       platform.  Only when the text file is extracted to a different
       type of platform will the 8-bit text be stripped to 7-bit text.

       In "-t1" text mode, ARJ will look at the first 4096 bytes of the
       input file looking for non-text characters.    In "-t1g" text with
       graphics mode, ARJ will look at the first 4096 bytes of the
       input file looking for too many byte values over hex 7F.  If ARJ
       finds either condition it will automatically backtrack and
       switch to "-t0" (default) binary mode for that particular file.
       In addition at the end of compressing the input file, if ARJ
       finds that the input file size is not greater than 80 percent of
       the binary file size (size on disk), ARJ will backtrack and
       re-archive that file in binary mode.  This should help to avoid
       the problem of accidentally compressing executable files with
       the "-t1" option which results in lost data.  These tests are
       not foolproof.

       The original file size reported by the "l" and "v" commands is
       the actual number of bytes input during text mode compression.
       This is usually the MS-DOS file size minus the number of
       carriage returns in the file, since C text mode strips a file of
       carriage returns.  There can be problems with the file size
       because compressing in TEXT mode can be LOSSY (unnecessary
       characters may be lost).  This can cause problems for some
       archive conversion programs that check file sizes.

       The "-t" option has been modified to allow setting file type by
       suffix similar to "-js" option.  If you want to set the file type
       to text mode for .ASM and .C files, you would specify the option
       "-t1.asm.c".

       ARJ a archive *.* -t1.asm.c.h.doc
       ARJ a archive *.* -t1g.txt.doc

       Note that in the switch sequence "-t1f -t1f.doc.asm", the second
       switch does not override the first switch which specifies that
       all files are to archived in text mode.

       If you want to specify the binary file type by suffix, you must
       specify the default file type to text and then specify the type
       by suffix, because the default file type is normally binary.

       ARJ a archive *.* -t1 -t0.com.exe.obj

       Because of the way ARJ checks all files to be archived in text
       mode, some true text files will not pass the test.  In this
       case, you can specify the "f" modifier to force text mode.  This
       modifier can be combined with the "-t1." suffix option.  The "f"
       modifier must follow the "g" modifier if any.

       ARJ a archive *.bat -t1f
       ARJ a archive *.txt -t1gf
       ARJ a archive *.* -t1f.bat.asm.doc

       One trick that you can do with the -t1 option is to convert UNIX
       text files to MS-DOS text files.  If you have extracted the
       files out of the ZOO 2.10 archive and need to convert the
       linefeeds to carriage return/linefeed, you can use the following
       commands:

       ARJ a archive *.* -m0 -t1
       ARJ e archive *.* -y

    u: Update files (new and newer)

       This switch used with the "e" and "x" commands causes ARJ to
       extract newer and non-existing files.

       This switch used with the "m" command causes ARJ to update only
       input files with newer dates than the ones in the archive and
       add new files to the archive.  After the archive has been
       updated, all added files and updated selected files and all up
       to date selected files will be deleted.

    v: enable multiple Volumes

       This switch is required to put ARJ into multiple volume mode.

       This switch allows the creation of multiple volumes in the ADD
       mode.  The command "arj a a:arjvol \*.* -b -r -v360000" allows a
       user to backup up all files changed since the last backup to
       multiple floppy disks.  ARJ will pause between volumes to allow
       changing disks.  Subsequent volumes will be suffixed .A01, .A02,
       .A03, ... , .A99, .A00, .A01, etc.  You can start the volume
       series at .A01 by specifying the full name of the starting
       archive as "name.A01".

       After the pause to change diskettes, ARJ will check to make sure
       that the diskette has been changed.    However, this check is
       limited to 3 retries for the same volume.

       ARJ normally only creates volumes numbered up to .A99 for one
       hundred uniquely named volumes.  Then the numbers roll over to
       .A00.  When the archive name ends in .000, ARJ will create
       volumes numbered up to .999 for one thousand uniquely named
       volumes.  You can also start the series at .001.

       Example:  ARJ a -v720 -y -r archive.000 d:\

       Archived files can be split across volumes.    ARJ will try to
       fill each volume to within 200 to 1000 bytes of specified
       maximum size.

       The modifier "w" specifies to ARJ that files are NOT to be split
       across volumes except for one case.    That case is where the
       archived file would not fit in ONE whole volume.  This feature
       does not optimize the use of space in these type of volumes.
       With this feature, it is possible to have a volume of only 100
       or less bytes.

       An advantage to "w" type volumes is that updating of these
       volumes is supported for the "f"reshen command and other
       commands that do not add new files to the archive.  You can add
       files to these volumes only if you do NOT limit the volume size.

       The command "arj x a:arjvol -v" would restore files starting
       from arjvol.arj.  You must specify the entire ARJ volume name
       including the .Ann suffix when starting from the middle of a
       series of volumes or when the series starts with ".A01" or
       ".000", etc.

       You can suppress the next volume prompt with the "-jyv" option.
       When the multiple volume ARJ files to be used are located on
       drives with removable media (diskette drives, etc.), ARJ will
       ALWAYS PROMPT for the next diskette even with the "-y" option
       specified.  At DOS versions before 3.0, only drives A and B are
       considered removable.

       ARJ x a:arjvol -v -jyco

       The above example extracts in multiple volume mode and
       suppresses prompting for permission to create directories and to
       overwrite existing files.  ARJ will assume yes in these cases.

       Because of the splitting process, archived split files with a
       size of zero bytes are possible.  This is not an error.

       If you comment your archives with long comments, you should take
       that into account when specifying volume size.  You should
       specify a smaller volume size during the "a" command before
       adding the comments.

       The "-v" switch will accept the abbreviations 360, 720, 1200,
       and 1440.  These will be translated to 362,000, 730,000,
       1,213,000, and 1,457,000 bytes, respectively.  Please note that
       if the available disk space is less than the requested amount,
       ARJ will prompt the user for permission to continue.

       You can use the "K" modifier as a shortcut for "000".  For
       example, 100K means 100000.    "K" does NOT mean 1024.

       The "-vv" switch turns on the next volume beep option.  When you
       select this option, ARJ will sound a beep prior to the next
       volume.

       The "-va" switch sets the disk space auto-detect option.  ARJ
       will check for the disk space available on the target directory
       and try to use all or most of it.  This option is aimed at
       diskette usage.  Please note that this switch option detects
       free disk space.  It does not detect formatted disk space.
       If the space available is less than 10,000 bytes, ARJ will
       prompt the user for permission to continue.    Please note that
       ARJ can support the use of diskettes formatted at higher than
       normal capacities such as 3.5 inch HD diskettes formatted at
       1.6 MB.

       Examples:  ARJ a A:backup -b -va
              ARJ a backup -v360

       The "r" modifier allows the reservation of disk space on the
       first volume.  The number after the "r" specifies the space to
       reserve.  This is useful for software installation volumes.

       Example:  ARJ a install -v360r50K   make first volume 50000
                           bytes smaller than 360K.

       The switch modifier "s" can be used to make ARJ execute one
       specified system command prior to each volume or make ARJ pause
       for manual execution of system commands.  This is useful for
       purging target diskettes before ARJ writes to them.

       The switch modifier "z" is identical to the "s" modifier except
       that the system command is NOT echoed to the screen.

       Optionally, after the "s" modifier, you can specify a system
       command or batch filename.  ARJ will automatically execute the
       command or batch file before each volume.  If the command has
       embedded blanks, then the entire switch option must be
       surrounded by double quotes.  The system command is executed
       before ARJ executes the auto-detect space option.

       Examples:  ARJ a A:backup -vas
              ARJ a A:backup -vvas
              ARJ a A:backup -v360s
              ARJ a A:backup -vvw360s
              ARJ a A:backup -vaspurge.bat
              ARJ a A:backup -v360sdelete.bat
              ARJ a A:backup "-vasFORMAT A:"
              ARJ a A:backup "-vasDIR C:\ "

       Note that the last example has a space before the last double
       quote mark.    If the last space is missing, the internal command
       line parser will make the double quote mark part of the DIR
       command.

       The "-v" switch now accepts its modifiers in any order.  The "s"
       and "z" modifiers must be last because any succeeding text is
       considered the system command to execute.

       Examples:  ARJ a volume -vavw    beep, autosize, whole files
              ARJ a volume -vavsDIR    beep, autosize, execute DIR

       Volume archives can be used as stand-alone archives for non-update
       commands except for the files that are split across volumes.

       It is recommended that the "-jt" (test archive) option be used
       with the "-v" switch to ensure perfectly built volumes as it is
       tedious to retest volumes after they are built.

       During ARJ operation in non-update commands, ARJ will not abort
       when it cannot open the correct sequential ARJ volume archive.
       It will report the open error and proceed to the "Ok to process
       the next volume?" prompt.  At this point it is possible to swap
       diskettes to put the correct volume in place.  This feature is
       disabled if the "next volume" prompt has been disabled.

       For those who have enough free hard disk space, the -v option
       can be used to make backing up the hard disk fairly easy.  ARJ
       can be set to create multiple floppy sized volumes on the hard
       disk for later copy to diskettes.  So even if ARJ is slow, you
       can fire up an ARJ backup and some time later, you can quickly
       copy the volumes to floppies.  Below are sample backup commands:

       arj a backup *.* -b2 -r -v360 -y -jt -js    full backup
       arj a backup *.* -b1 -r -v360 -y -jt -js    incremental backup

       See the "-jn" and "-jx" options to see how to recover from an
       abort in the middle of a backup type operation.

       *****************************************************************

       WARNING:  Updating multiple volume archives with the "-v" switch
       set is NOT supported or recommended.  By default, ARJ will not
       allow the updating of multiple volume archives.  You can specify
       the "-hu" option to bypass this protection.

       Example:  ARJ c archive -hu -zcomment.txt

       *****************************************************************

       TIP:

       To pre-determine the number of diskettes required to archive a
       set of data, you can take advantage of the "s" option of the
       "-v" switch.  The "s" option lets you execute a DOS command
       prior to each volume.  You can specify a command that deletes
       the previously created archive volume.  This lets you use the
       same floppy diskette/hard disk space to build the multiple
       volumes.

       Example:  ARJ a -r "-vasdel a:volume.a??" -y a:volume c:\*.*

    w: assign Work directory

       This switch option is HIGHLY recommended if you are archiving
       directly to diskettes or if you have a sufficient RAMDISK space.

       By default, ARJ builds a new ARJ archive file in the same
       directory as the old archive file.  By specifying the "-w"
       switch, you can specify the working directory where the
       temporary archive file will be built.  After the temporary
       archive file is built, it is copied over the original one and
       deleted.

       Normally ARJ requires enough disk space for the original archive
       and the new temporary archive.  Specifying the "-w" switch
       allows you to move some of that disk space requirement to
       another directory.

       When using the "-w" switch while archiving to multiple volumes,
       ARJ will check the available disk space in the work directory.
       If there is not enough space, ARJ will prompt for permission to
       continue.  This prompt can be suppressed with the "-y" and
       "-jyk" switches.

       If the copy of the temporary archive on top of the original
       archive fails because of an I/O error, you will have to do the
       copy manually.  ARJ will not delete the temporary archive in this
       error situation.  If you press CTL BREAK during the copy
       process, ARJ will delete both the temporary archive and the
       original archive files.

       Example:  ARJ a -we:\temp\ archive *.c

       For speed reasons, you should always use the "-w" option when
       creating or modifying archives on diskettes.  You should specify
       a work directory on your hard disk or ramdrive.

       Example:  ARJ a -we:\ b:archive *.c

    x: Exclude filenames

       This switch is used to exclude filenames or wildnames from the
       list of filenames to be processed.

       Example:  ARJ a archive soft\*.* -r -x*.exe -x*.obj -xtest

       This example will archive all files in the soft directory and
       subdirectories with the exception of any files named "test"
       or ending in ".exe" and ".obj".

       You can also specify an exclude file list by preceding the
       filename with the list character "!".  The exclude file list
       must contain a list of filenames/wildnames one per line with no
       leading or trailing blanks.

       Example:  ARJ a archive soft\*.* -r -x!exclude.lst

       You can specify a pathname to exclude as in:

       ARJ a archive \dir\*.* -r -x\dir\*.*

       In the above example, ARJ will exclude all files in \dir
       but not the subdirectories in \dir.

       The "-x" option also allows you to exclude an entire path
       including subdirectories from being selected for processing.

       Syntax:  ARJ a archive C:\*.* -xC:\TEMP\

       The "\" after C:\TEMP indicates to ARJ that everything below
       C:\TEMP\ is to be excluded.

       Note that the exclude directory option requires that the
       directory be specified in the same relative path that the
       selected files use.

       Example:

       arj a archive \temp\*.* -x\temp\firstdir    is correct usage
       arj a archive \temp\*.* -xC:\temp\firstdir    is NOT correct because
                            of the C:

       The "-x" switch also works for non-update commands like
       "e"xtract and "l"ist.

       Examples:

       arj e archive -x*.exe       extract all files except *.exe files
       arj l archive -x*.exe -x*.obj   list all files except *.exe and *.obj

       A maximum of 8000 filenames or wildnames can be excluded.

       Note that the "-x" option is unaffected by the "-p" option.

    y: assume Yes on all queries

       Use this switch for batch type uses of ARJ.    This switch
       disables most of the normal user queries during ARJ execution.
       Use this switch to suppress overwrite queries in the "e" and "x"
       commands, to suppress the make new directory query in the "e"
       and "x" commands, to suppress the new filename prompt when an
       open file operation fails in the "e" and "x" commands, to
       suppress the pause during the "s" command and to suppress the
       next volume pause using the "-v" option to create volumes on the
       hard disk.

       The "-y" switch will NOT suppress the "-v" next volume prompt
       when the archive is located on a drive with removable media
       such as a diskette drive.

       Use this option with due caution, especially during extraction
       as this sets ARJ to overwrite files.  However, the "-n" option
       can be used to avoid any overwriting.

       As an alternative, you can use the "-jy" option which lets you
       suppress individual types of user queries.

    z: supply file for archive comment

       The "-z" switch has been provided to facilitate batch commenting
       of ARJ archives with the "c" command.  When the "-z" option has
       been specified with or without a comment file, ARJ will only
       process the archive header comment and will skip any file
       commenting unless the "-jz" switch has been specified.

       A comment file containing only a single blank can be used to
       erase comments from ARJ archives.

       Syntax:  arj c archive -z
            arj c archive -zcomment.txt
            arj a archive -zcomment.txt

       The "-z" option also allows one to dump the ARJ archive header
       comment to a file.  This will only extract the main archive
       comment and not the individual file comments.

       Syntax:  arj e archive ... -zcomment.txt  dumps only the comment
            arj x archive -zcomment.txt      dumps comment and files

       ja: show ANSI comments

       Display any ANSI escape sequences unaltered.  By default, escape
       characters in comments are not displayed.  Not displaying ANSI
       command is the default because of ANSI BOMBS.  Using ANSI
       commands, it is possible to redefine the keyboard of users using
       certain ANSI drivers.  For example, a key could be redefined to
       "echo y | del \*.*".

      ja1: inhibit the display of the archive comment

       The "-ja1" switch will suppress the display of the archive
       comment.

       jb: set archive Backup type

       If you modify an archive with the "-jb", ARJ sets the backup
       flag in the archive.  On adding, updating, or moving files to a
       backup type archive where a duplicate filename exist, ARJ marks
       the original file as a backup and inserts a copy of the
       duplicate filename.    The backup flag will stay set until reset
       with the "-jb1" option.

       These backup files take up space in the archive.  They can be
       purged with the ARJ k command.

       Examples:  ARJ a -jb archive dir\file1
              ARJ e -jb archive dir\file2
              ARJ k archive *.c
              ARJ y -jb archive       just sets the backup flag

       Normally, backup files will not be selected by ARJ commands.  In
       other words, an ARJ l archive command will not display backup
       files.  However, the "-jg" option will include backup files in
       the selection process.  For example, ARJ l archive -jg will
       display all files including backup files.

       This option is especially useful for backing up files.  You can
       maintain several generations of the same file in the same
       archive.

      jb1: reset Backup type archive

       This switch allows you to reset the backup flag in a backup type
       archive.  Addition of files to such an archive will no longer
       result in files being marked as backups.  However, this option
       does not remove already existing backup files.

       Example:  ARJ y archive -jb1
             ARJ a archive filename -jb1

      jb2: unmark backup file

       The "-jb2" option is used with the "y" command to unmark files
       marked as backups.  Note that this may produce duplicate files
       in the archive.

       Example:  ARJ y archive -jb2        unmark all backup files
             ARJ y archive *.doc -jb2  unmark all *.doc files
             ARJ y archive -# -jb2 5   unmark the 5th file

      jb3: mark as backup file

       The "-jb3" option is used with the "y" command to mark files as
       backups.

       Example:  ARJ y archive -jb3        mark all files as backups
             ARJ y archive *.doc -jb3  mark all *.doc files
             ARJ y archive -# -jb3 5   mark the 5th file

       jc: exit after Count of files

       The "-jc" option sets ARJ to exit early from an archive scan
       when the specified number of files have been extracted, listed,
       printed, etc.  If no number has been specified, ARJ will set
       that number to the number of filename arguments.

       Examples:  ARJ e -jc archive file1 file2 file3
              ARJ e -jc5 archive *.bat

       Note that "*.*" is considered a count of ONE argument.

       This option does NOT WORK when modifying an archive.

       jd: ensure free Disk space

       In extraction mode, this option causes ARJ always to ensure that
       it will leave the user specified amount of disk space available.
       ARJ will skip files that would exceed the disk space available
       limit.  Each file that is skipped will count as an error.  The
       default free space is zero bytes.

       Example:  ARJ e archive basedir\ *.doc -jd100K

       In the above example, ARJ will not extract any files that will
       cause the disk free space to be less than 100,000 bytes.  The
       "K" is a synonym for "000".    For example, 100K means 100000.

       In "l"ist or "v"erbose list mode, this option sets an error
       check at the end of the listing screen based upon the total of
       the original sizes of the files selected.  If the total size
       would exceed the user specified free space limit, ARJ will
       report an error at the end of the listing screen.

       Example:  ARJ l archive *.doc -jd10000

       In this example, ARJ will report an error if the current
       available disk space minus the total of the *.doc files is less
       than the specified minimum of 10,000 bytes.

       Example:  ARJ e archive *.* -jd0

       In this example, ARJ will skip extraction of any files that
       would result in a disk full error.

       je: create self-Extracting archive

       This option causes ARJ to create a self-extracting .EXE file
       instead of an .ARJ file.  This ARJSFX self-extractor is about
       15,000 bytes in size and supports full pathname extraction.
       The "-je1" switch creates a smaller self-extracting .EXE file.
       The ARJSFXJR module is about 5,800 bytes in size.  Both modules
       support display of the archive comment.  The ARJSFX module also
       provides a query to continue the extraction.

       The SFX modules do NOT support multiple volume archives.  That
       would serve little purpose because you would have to distribute
       multiple files anyway.  In this case, DEARJ (available to
       registered users) would serve adequately.  DEARJ supports all of
       ARJ extraction functionality including multiple volume archives.

       Please note that including the SFX modules, DEARJ, or ARJ as
       part of a hardware and/or software package ALWAYS REQUIRES an
       ARJ distribution license.

       At ARJ 2.10, the SFX executable modules are pre-compressed using
       LZEXE.  This may cause false indications with EXE scanning
       programs showing that an ARJ SFX archive is a LZEXE compressed
       file.  Only the executable header module is LZEXE compressed.
       The actual archive is ARJ compressed, of course.  The LZEXE
       header is modified to avoid extraction by UNLZEXE type programs.
       UNLZEXE may truncate an ARJ self-extractor of its archive.

       Both SFX modules have an identification string located in the
       first 1000 characters of the executable.  The identification
       string is "aRJsfX" without the quotes and in the exact case.

       The current commands ARJSFX supports are:

       Usage: ARJSFX [-command] [-switch(s)] [directory\] [file(s)]

       Commands:
       e: Extract files           v: Verbosely list contents
       l: List contents           x: eXtract files with pathname (default)
       t: Test contents

       Switches:
       a: show ANSI comments       n: only New files
       c: skip time stamp Check    p: match with Pathname
       f: Freshen existing files   s: Skip security check
       g: unGarble with password   u: Update files
       i: no progress Indicator    y: assume Yes on queries

       NOTE!!!  ARJSFX uses the "-" character before all commands and
       switches.  This is to allow extraction of files named e, l, etc.

       The default ARJSFX command is "-x" extract files with pathnames.
       At ARJSFX startup, the self-extracting archive will display any
       archive header comment followed by a query to "Continue
       extraction?".  This query can be suppressed by specifying the
       "-e", "-x" or "-y" options on the command line.

       When extracting pathnames, ARJSFX will prompt for permission to
       create new directories unless the "-y" option is specified.
       ARJSFX will create absolute or relative directories depending
       upon whether the root directory has been stored in the pathname
       in the archive.  Saving the root is done using the "-jf" option.

       To avoid extracting to paths, the archive creator should use the
       "-e" option to exclude path specs.  The user extracting the SFX
       module can specify the "-e" command to extract to the current
       directory.

       ARJSFX does not support compression method 4.

       The ARJSFX module supports the ARJ-SECURITY envelope feature by
       itself.  The ARJ-SECURITY feature is only available as a
       licensed option.  It is intended as a feature for software
       developers.    The "-s" option allows the user to skip the testing
       of the ARJ-SECURITY envelope.

       ARJ will create a self-extracting module without an intermediate
       archive file.

       Example:  ARJ a software *.* -je

       If you want to make a self-extracting module from an ARJ
       archive, use the "y" command.

       Example:  ARJ y software -je

       IMPORTANT:  When executing an ARJSFX module on a system with the
       CONSOLE device set to RAW mode, the ARJSFX module will abort on
       user input to avoid hanging the system.  Use of the "-y" switch
       on the command line will avoid the problem.

       Example:  ARJ230 -y

       The ARJSFXJR module created with the "-je1" switch is a
       stripped-down version of ARJSFX.  ARJSFXJR does not support method
       4 or text mode "-t1" or garbled "-g" archives.  An ARJSFXJR
       module containing files with pathnames will extract to the paths.
       ARJSFXJR will automatically create directories as needed to build
       the paths.

       Example:  ARJ y software -je1

       The current commands ARJSFXJR supports are:

       Usage: ARJSFXJR [-switch(es)] [drive:][directory\]

       Switches:
       n: set ARJSFXJR to NOT count as an error the skipping of files
       o: set ARJSFXJR to overwrite existing files

       You can specify a target_directory or drive or both.  However,
       you must specify the ending "\" or ":" symbol.

       ARJSFXJR -o C:\SOFT\  -> self-extract into directory "C:\SOFT\"
                    in overwrite mode.

       Both the ARJSFX and ARJSFXJR modules will by default extract to
       relative/absolute path specs if the archive contains
       relative/absolute path specs.

       More examples:

       Build an SFX module with absolute pathnames for extraction to
       the absolute pathnames:

       ARJ a -r -je -jf DISTRIB \product\*.*

       The user need only type "DISTRIB -y" to recreate automatically
       the "product" directory on the current drive.

       Build an SFX module with relative pathnames for extraction to
       relative pathnames:

       ARJ a -r -je DISTRIB \product\*.*

       The user need only type "DISTRIB -y" to recreate automatically
       the "product" subdirectory in the current directory.  The user
       can recreate the "product" subdirectory in another directory by
       typing the command "DISTRIB -y directory_name\".

       Build an SFX module with relative pathnames for extraction to
       relative pathnames excluding the base directory:

       ARJ a -r -e1 -je DISTRIB \product\    *.*

       The user need only type "DISTRIB -y" to recreate automatically
       the files and subdirectories of the "product" directory in the
       current directory.

       Build an SFXJR module with filenames (no path specs).

       ARJ a -e -je1 DISTRIB \product\*.*

       The user need only type "DISTRIB" to extract automatically the
       entire contents of "DISTRIB.EXE" to the current directory.

       jf: store/use Full specified path

       Normally, ARJ will strip all pathnames of drive letter and root
       symbol.  This switch disables this action.  When extracting with
       the "x" command from an archive that was built with this switch,
       ARJ will normally strip any drive letter and root symbol, unless
       the "-jf" option is specified again.

       The "-jf1" option will strip only the drive spec and NOT the
       root symbol.  You can use either the "-jf" or "-jf1" option
       during extraction to force use of the root directory.

       jg: select backup files

       The "-jg" switch allows the user to include the selection of
       archive files that are marked as backups by the "-jb" option.
       Normally, backup files will not be processed by any commands
       except for the "k" and "y" commands.

       Examples:  ARJ l -jg archive
              ARJ e -jg -q archive name.c
              ARJ d -jg archive *.*

       jh: set Huffman buffer size

       ARJ has a default static Huffman buffer size of 16,384 bytes.
       This buffer size is better for compressing executable files.

       The buffer size in ARJ 0.15 and earlier was set to 65,500 bytes.
       That size is better for large text files.  You may specify a
       buffer size from 2,048 to 65,535 bytes.

       Example:  ARJ a archive *.txt -jh65500

       If you specify a Huffman buffer size, ARJ will use that size for
       all types of files specified by the archive command.

       ji: set Index filename

       The "-ji" switch is used to create an index file containing the
       filenames archived or meeting certain criteria.  This is
       especially helpful when using ARJ to do multiple floppy type
       archives.  This file SHOULD NOT be created on the floppy
       diskette if the floppy diskette is changed during the archival
       process.

       If the index file already exists, ARJ will append data to it.

       The index file contains three types of text lines.  The first
       type is the volume name record.  It contains the date, time,
       starting file position, and the archive name.  The second type
       is the filename record.  It contains only the filename.  The
       third type only occurs during archival with testing "-jt".  It
       is a line containing "Testing " and the archive name.

       This information is also useful for restarting "-v" multiple
       volume archives.  You need the filename and the starting file
       position.

       The "-ji" switch will log the following events:

       a, f, m, u - Log actual filenames added to archive and if testing
            is enabled, the actual filenames that failed testing.
       d          - Log archived filenames deleted.
       e, x       - Log archived filenames successfully extracted.
            Extracted files with CRC errors are NOT logged.
       j          - Log archived filenames added to archive.
       l, v       - Log archived filenames listed.
       t          - Log archived filenames that failed testing.
       w          - Log archived filenames that contain string matches.

       This logging function is especially helpful when testing and
       searching archives.

       The "-hi" option will set ARJ to write more details to the index
       file.

       jk: Keep temp archive on error

       When the "-jk" switch has been specified, ARJ will keep the
       temporary archive during an aborted archive build/update.
       During a failed build, ARJ will modify the temporary archive to
       make it usable by removing the broken portion.

       jl: display only filespecs

       The "-jl" option sets ARJ to display only the filespec of a
       filename during the progress displays.  This will simplify the
       display output.

       jm: set Maximum compression

       The "-jm" switch sets the maximum compression mode.    This mode
       is used with method 1 "-m1" to increase its compression.  This
       may increase compression time significantly.

       You can get a 1 to 5 percent improvement in compression with
       ARJ -m1 -jm.

       The "-jm1" option provides slightly less compression than "-jm"
       at a faster speed.  This can range from slightly faster to much
       faster.

       Use of "-jm" with "-m2", "-m3", or "-m4" is NOT SUPPORTED.

       jn: set restart Name

       The "-jn" switch is used to restart interrupted multiple volume
       archives in conjunction with the "-jx" switch.  All selected
       files are skipped up to but not including the named file.

       Example:  ARJ a volume -v360 -r -jn\BIN\TREE.COM -jx1230

       In the above example, all files scanned up to \BIN\TREE.COM are
       skipped.  Archiving will start at file position 1230 of file
       \BIN\TREE.COM.

       IMPORTANT!!!  The exact name of the starting file must be
       specified according to the wildnames/filespecs specified.  This
       name is the same as displayed by the Adding filename display and
       the same as written to the "-ji" index file.  Please note that
       \DOS\TREE.COM is not considered the same as DOS\TREE.COM with
       this option.

       New at ARJ 2.39 is the feature where ARJ will automatically
       scan the previously written index file ("-ji") to get the
       necessary restart information.  You only need append "-jn" to
       the previous backup command line.  This option will not work
       without the index file.  ARJ will automatically set the correct
       volume name.

       Example:  ARJ a a:backup c:\*.* -r -vvas -jiINDEX.FIL
             ARJ a a:backup c:\*.* -r -vvas -jiINDEX.FIL -jn

       jo: query when updating an archive file

       The "-jo" option has two flavors.

       The "-jo" switch is used to query the user when using the ARJ
       "a" or "m" commands to add files to an archive.  Before ARJ
       overwrites an existing internal archive file when using "-jo",
       ARJ will query the user with "Update <filename>? ".    Without
       this option, ARJ will overwrite the internal archive file
       without querying.

       jo: extract to unique Output names

       The "-jo" switch during extraction allows automated handling of
       duplicate filenames.

       On extraction with the "-jo" switch where the output file
       already exists in the target directory, ARJ will attempt to
       generate a unique filename by changing the file extension to a 3
       digit number from .000 to .999.  If ARJ cannot generate a unique
       name, it will skip extracting the file.

       jp: Pause after each screenful

       This switch will cause ARJ to pause after listing each screenful
       of data for the "l", "p", "v", "w" commands.  Press the ENTER
       key to continue the listing.  You can also enter "quit" to exit
       ARJ.

       In one special case, "ARJ -? -jp", the use of the -jp switch
       toggles page pauses off, because by default in help mode,
       pausing is on.

       You can specify the page size with the "-jp" option as in
       "-jp50".  This also turns on the pause mode.  If you wish to use
       this in ARJ_SW, it is suggested that you use "-jp50 -jp-" to set
       the page size and to turn off the pause mode.

       jq: set string parameter

       The "-jq" option is used to supply additional parameters to the ARJ
       w and ARJ b commands.  If the parameters contain blanks, then the
       entire "-jq" option must be enclosed by two double quote marks.

       See the "w" and "b" commands for the correct "-jq" syntax.

       jr: Recover broken archive files

       This switch is used to access headers and files in an archive
       that has been corrupted either with bad data or missing data.
       This switch lets ARJ find the next valid header for listing,
       extraction or testing.  ARJ will continue to look for headers
       until it finds the end of archive marker.  If the archive is
       damaged, ARJ may display a message stating that it encountered
       the end of file unexpectedly.

       This switch also will allow extraction of files with CRC or
       Bad file data errors.  Normally, ARJ will delete such extracted
       files.

       If file header data has been corrupted, ARJ will be unable to
       recover any file data associated with that header.  As of ARJ
       2.30, "Bad file data" errors will not abort the recovery
       process.

       Example:  ARJ e archive -jr

       The "-jr1" version of this switch allows processing of damaged
       ARJ archives that have an end of archive mark in the middle of
       the archive.  However, the use of this switch will always cause
       ARJ to display an "unexpected end of file" error message and to
       return a non-zero errorlevel.

       js: Store archives by suffix

       This switch is used to set ARJ to store and not compress files
       with the following extensions: .ARJ, .ZIP, .LZH, .PAK, .ARC.

       The file extensions can be specified as follows:

       ARJ a archive -js.zoo.ice.gif

       The above command will store files with extensions ending in
       .ZOO, .ICE, and .GIF.  This overrides the defaults.

       You can use the environment variable ARJ_SW to set up your own
       defaults as follows:

       set arj_sw = -js.arj.zip.lzh -js-

       The "-js-" turns off the option by default so that when you
       specify the "-js" switch on the command line, ARJ will already
       know what extensions you want to store.

       jt: Test temporary archive

       The "-jt" switch can used to set ARJ to execute an archive
       integrity check on an intermediate temporary archive before
       overwriting any pre-existing original archive.  If any error
       occurs, ARJ will not overwrite the original archive.  When used
       with the "-w" switch option, ARJ will also test the final
       archive file as well as the temporary archive before deleting
       any input files.

       Example:  ARJ m archive *.c -jt

       The "-jt" switch can be used with extract type commands to set
       ARJ to verify the archive before doing any extraction of files.
       If the archive fails verification, the extraction is NOT
       attempted.  This is useful for handling MAIL packets where
       archive corruption due to a bad file transfer is a fairly
       frequent event.

       Example:  ARJ e archive -jt

       The "-jt1" switch allows an actual file contents comparison in
       addition to the normal file CRC calculation check.  This option
       can also be used with the ARJ t (test) command.

       When used with the ARJ t command, ARJ "-jt1" will use the
       base_directory option and the filename stored in the archive to
       locate the original file.

       When used with the ARJ add/move/update type commands, ARJ will
       use only the filename stored in the archive to locate the
       original file.  Therefore, the "-jt1" option does NOT work with
       the "-e" option or when the original filename has a drive letter
       or root directory in it and you did not specify "-jf".

       Examples:  ARJ t -jt1 archive dir\
              ARJ a -jt1 archive e:\temp\*.*  -jf

       The "-jt2" switch allows the same features as "-jt1" except that
       the file compares are only done for the newly added/updated
       files.  This avoids the situation where the some of original
       input files are missing or have changed.  NOTE that a problem
       can occur with the "f" and "u" commands when files in the
       archive are NEWER than the files being added.  ARJ will
       considered the file up-to-date and added and will do a file
       compare.

       Example:  ARJ u -jt2 archive dir\

       ju: translate UNIX style paths

       This switch causes ARJ to translate any subsequently encountered
       pathnames to MS-DOS style from UNIX style.  This switch also
       causes translation of filenames entered as a result of ARJ
       prompts such as in comment filenames.

       Example:  ARJ a archive -ju /soft/*.c

       jv: set Verbose display

       This switch sets ARJ to display more information during the
       "t"est, "l"ist, and "ex"tract commands.

       Example:  ARJ t archive -jv

       The "-jv" switch causes the "v" command to display only the
       pathnames to the screen.

       The "-jv1" switch causes the "v" command to display the archive
       data in manner suitable for sorting on various fields.

       The "-jv" switch will set the "p", "s", and "w" commands to
       display IBM graphics characters (128 to 255).

       jw: set extract output filename

       The "-jw" option allows you to specify the name of the
       extraction output file.  You should only select one file to
       extract when using this option.

       This is similar but not exactly the same as using the "p"
       command with DOS output redirection.  Using DOS redirection would
       cause all of the output of the extraction to be put into the
       output file.  Using "-jw" would set ARJ to prompt for
       overwrite permission per each file extracted to the output file.

       This option may be needed when trying to output binary data to
       a printer.

       Example:  ARJ e archive printer.dat -jwLPT1

       jx: start at eXtended position

       This switch is used to continue a file onto a new archive
       manually.  This switch is normally for use when a multiple
       volume "a" command has aborted.

       Example:  ARJ a arjvol.a01 manual.doc -jx100000

       This example archives manual.doc starting from file byte
       position 100,000 and on.

       In extraction mode, this sets ARJ to extract a file to an output
       file at a specified starting position.

       Example:  ARJ e -jx2000000 archive file1

       This example extracts the file "file1" to file1 starting at
       position 2,000,000 or at the end of the file.

       This is similar to using the command "ARJ p archive >> output".
       To duplicate this redirection with ARJ would require the following:

       ARJ e -jx2000K -jwoutput archive

       NOTE that the -jx option is NOT functional when adding a file to
       an archive that already contains one or more files.

       jy: suppress queries assuming YES

       This switch is used to suppress individual ARJ user prompts.

       Syntax:  ARJ e archive -jy<flags>

       where <flags> is one or more of the following characters: a, c,
       d, k, n, o, s, v.  For each flag selected, ARJ will act as if
       you had answered YES to the suppressed question.

       A - skip append query during a multi-volume extraction
       C - skip create directory query
       D - skip delete files query
       K - skip disk space availability query
       N - skip new filename prompt
       O - skip overwriting existing file query
       R - erase all typeahead before prompting
       S - skip scanned enough text query
       V - skip ok to proceed to next volume query
       Y - accept single character Y/N/A/Q inputs

       Example:  ARJ x volume -v -jyaco
             suppress append, create, and overwrite prompts.

       ARJ will allow you to specify individual "jy" options in
       separate switch strings as in "-jyy -jyr".  You may inhibit a
       switch as in "-jyr-".  As with other switches, the "jy" switches
       toggle as in "-jyr -jyr".

       jz: supply file for file comment

       The "-jz" switch has been provided to facilitate batch
       commenting of one or more files within an ARJ archive.  Only one
       comment file can be specified.  That file will be used to
       comment each file specified on the command line.

       A comment file containing only a single blank can be used to
       erase comments from ARJ archives.

       Syntax:  ARJ c archive file1 -jzcomment.txt
            ARJ c archive file1 -zheader.cmt -jzfile.cmt

       ha: ignore readonly Attribute

       The "-ha" switch sets ARJ to reset the attributes of a file to be
       overwritten or a file to be deleted.  This allows the overwrite or
       delete operation to proceed.

       A slight performance degradation may result from using this option.

       Examples:  ARJ e archive -ha
              ARJ m archive -ha dir\*.*

       hc: execute DOS Command at ARJ start

       The "-hc" switch sets ARJ to execute a DOS command at the start
       of the execution of ARJ immediately after the command line
       switch options have been processed, but before the wildcard
       search is started.  This can be used to clear the screen to hide
       the command line or to provide a pause option to allow swapping
       diskettes.

       Examples:  ARJ a -hcCLS archive -gpassword
              ARJ a -hcPAUSE archive *.*

       he: skip test of security Envelope

       The "-he" switch sets ARJ to skip the verification step when
       accessing an ARJ-SECURED ARJ archive.  If an ARJ archive has
       a damaged ARJ-SECURITY envelope, you will have to use the "-he"
       option to extract the archive.

      he1: set error on security Envelopes

       The "-he1" switch sets ARJ to abort with an error code of 4 when
       processing a possibly ARJ-SECURED archive.  This is useful as a
       REARJ.CFG option for ARJ.  This will prevent REARJ from
       converting an ARJ-SECURED archive to the same or another format.

       Examples:  ARJ l secured.arj -he1

       hi: full detail display in Index files

       The "-hi" switch when used with the "-ji" switch sets ARJ to
       include the file date-time stamp, the original file size, the
       compressed file size, the compression ratio, and the filename in
       the index file.

       Example:  ARJ a a:backup c:\*.* -r -va -jiINDEX -hi

       hl: return error for Listfile error

       The "-hl" switch sets ARJ to report the "file not found" type
       of errors when processing the filenames in an ARJ listfile
       during an "add" type command (a, f, m, u).  ARJ will
       subsequently return a non-zero DOS errorlevel when such an
       error has been found.  Previous versions of ARJ ignored these
       types of errors.

       Example:  ARJ a a:backup !listfile -va -hl

       hs: disable file Sharing

       The "-hs" switch sets ARJ to disable its file sharing feature.
       This may be necessary for some unusual applications.

       hu: allow the Updating of multiple volume archives

       The "-hu" switch sets ARJ to allow the updating of multiple volume
       archives.  At this version, by default, ARJ does not allow
       updating of multiple volume archives because of the possibility of
       losing data.

       Example:  ARJ c archive -hu -zcomment.txt

       hw: modify search filename display

       The "-hw" switch sets the ARJ w command to display the
       "Searching ..." filenames messages in a scroll saving format.
       Filenames of files that do not contain string matches will be
       overwritten on the screen.

       The "-hw1" switch sets the ARJ w command to display ONLY the
       "Searching ..." filenames messages for files that contain string
       messages.

       hx: specify archive file extensions

       The "-hx" switch allows the user to specify what the default
       file extension or extensions that are to be used by ARJ to
       access archive names that are not specified with file
       extensions.    ARJ will assume that the first extension specified
       will be the main default extension.

       Examples:  ARJ a archive *.* -hx.SDN   assumes default .SDN
                          file extension
              ARJ l archive -hx.SDN.ARJ   looks for archive.SDN and
                          if not found, then looks
                          for archive.ARJ


     ARJ COMMAND OPTIONS:

    Some of the following options have variations such as -s as in
    -s, -s1, -s2.

    The following options work for ALL ARJ commands.

    !names.lst
    -o
    -ob
    -od
    --
    -+
    -&
    -!
    -i
    -l
    -r   this affects wildcarded archive names, too.
    -s
    -x
    -y
    -ja
    -jl
    -jt
    -ju
    -jy
    -hc
    -he
    -he1
    -hs
    -hx

    The following options work for all ARJ commands that modify
    ARJ archives.

    -k
    -s
    -w
    -z
    -jb
    -je
    -jk
    -jz
    -hu


    In addition the following options work for ARJ a, f, m, u commands.

    -a
    -b
    -m
    -r
    -t
    -jh
    -ji
    -jm
    -jn
    -js
    -hi
    -hl


    The following options work for ARJ y command.

    -jb
    -je


    The following options work for ALL but the ARJ a, f, m, u commands.

    The name of the archive can be a wildspec.
    -#
    -d
    -e
    -p
    -jg
    -jr


    The following options work for the ARJ a, f, m, u, e, x
    commands.

    -$
    -c
    -f
    -g
    -n
    -u
    -jf
    -ji
    -jx
    -hi


    The following options work for the ARJ e, x commands.

    -d
    -jc
    -jw


    The following options work for the ARJ l, v commands

    -n
    -jp


    The following options have limited use.

    -q   - works for all commands except j, l, n, o, t, v, w, y
    -v   - works for l, v, w commands
    -jc  - works for e, x, l, v commands
    -jp  - works for l, v, w commands
    -jq  - works for b, w, commands
    -jv  - works for most commands
    -hw  - works for w command


     SAMPLE ARJ COMMANDS:

    a: Add files to archive

       ARJ a archive
       ARJ a archive -n
       ARJ a archive -f
       ARJ a archive -jt
       ARJ a archive -jt1
       ARJ a archive -jt2
       ARJ a archive -q
       ARJ a archive -r
       ARJ a archive dir\ -o
       ARJ a archive dir\
       ARJ a archive dir\ *.doc *.exe
       ARJ a archive !names.lst
       ARJ a archive -- -name-.txt
       ARJ a archive name1 name2 name3
       ARJ a a:archive -we:\ -vas c:\ -r -b2
       ARJ a a:archive.001 -we:\ -vvw360 c:\ -r -b1
       ARJ a archive -vw360 c:\ -r -y
       ARJ a archive c:\ *.* -r -jt1 -jf


    b: execute Batch or DOS command

       ARJ b archive name.txt
       ARJ b archive -jwOUT.NAM
       ARJ b archive SHEZ.EXE -jwSHEZ.EXE
       ARJ b archive *.exe -jwTEMP.EXE "-jqTEMP -help"


    c: Comment archive files

       ARJ c archive
       ARJ c archive -z
       ARJ c archive -zcomment.txt
       ARJ c archive -zNUL
       ARJ c archive file1 -jzcomment.txt
       ARJ c archive *.doc -jzNUL


    d: Delete files from archive

       ARJ d archive *.doc
       ARJ d archive *.* -jg
       ARJ d archive *.* -n
       ARJ d archive *.* -y
       ARJ d archive !names.lst


    e: Extract files from archive

       ARJ e archive *.doc
       ARJ e archive *.doc -d
       ARJ e archive -jd50000
       ARJ e archive -jo
       ARJ e archive -c
       ARJ e archive dir\ *.doc -jt
       ARJ e archive *.doc -y
       ARJ e archive -# 10 15 20-40


    f: Freshen files in archive

       ARJ f archive
       ARJ f archive -r
       ARJ f archive dir\ -r
       ARJ f archive dir\ *.doc -r
       ARJ f archive dir\ -r -jt2


    g: Garble files in archive

       ARJ g archive -gpassword
       ARJ g archive *.doc -gpassword
       ARJ g archive -g?


    i: check Integrity of ARJ.EXE

       ARJ i
       ARJ i c:\bin\arj.exe


    j: Join archives to archive

       ARJ j archive name1.arj name2.arj name3.arj
       ARJ j archive *.arj
       ARJ j archive arjsfx.exe
       ARJ j archive *.arj -o911201
       ARJ j archive *.arj -r


    k: pacK bacKup files in archive

       ARJ k archive *.*
       ARJ k archive *.* -y
       ARJ k archive *.doc -n


    l: List contents of archive

       ARJ l archive
       ARJ l archive *.doc
       ARJ l archive -o911201
       ARJ l archive -o911201 -ob911231
       ARJ l archive -n
       ARJ l archive -jg
       ARJ l archive -jp


    m: Move files to archive

       ARJ m archive
       ARJ m archive *.doc
       ARJ m archive dir\ *.doc
       ARJ m archive dir\ *.doc -o
       ARJ m a:archive.001 dir\ -r -vvwas -jt2


    n: reName files in archive

       ARJ n archive
       ARJ n archive *.doc
       ARJ n archive !names.lst
       ARJ n archive -o911201


    o: Order files in archive

       ARJ o archive !names.lst
       ARJ o archive *.bat *.exe *.doc
       ARJ o archive file1 file2 file3


    p: Print files to standard output

       ARJ p archive
       ARJ p archive -jp
       ARJ p archive *.doc
       ARJ p archive -o911201
       ARJ p archive name.txt > PRN


    r: Remove paths from filenames

       ARJ r archive
       ARJ r archive *.doc
       ARJ r archive -o911201 -ob911231


    s: Sample files to screen with pause

       ARJ s archive
       ARJ s archive *.doc -y
       ARJ s *.arj -y -r


    t: Test integrity of archive

       ARJ t archive
       ARJ t archive *.exe
       ARJ t archive !names.lst
       ARJ t archive -jt1


    u: Update files to archive

       ARJ u archive *.doc
       ARJ u archive *.doc -jo


    v: Verbosely list contents of archive

       ARJ v archive
       ARJ v archive *.doc
       ARJ v archive -jv
       ARJ v archive -jv1
       ARJ v archive -jp
       ARJ v archive -jg


    w: Where are text strings in archive

       ARJ w archive
       ARJ w archive -hw
       ARJ w archive -jp
       ARJ w *.arj -jp
       ARJ w *.arj *.doc
       ARJ w *.arj *.txt -jq+5+string
       ARJ w archive "-jq-3-to be or not"


    x: eXtract files with full pathname

       ARJ x archive *.doc
       ARJ x archive *.doc -d
       ARJ x archive -jd50000
       ARJ x archive -jo
       ARJ x archive -c
       ARJ x archive dir\ *.doc
       ARJ x archive -jf
       ARJ x archive *.doc -jyc


    y: copY archive with new options

       ARJ y archive -je
       ARJ y archive -je1
       ARJ y archive -jb
       ARJ y archive -jb1
       ARJ y archive -jb2
       ARJ y archive *.bat -jb2


     ARJ_SECURITY ENVELOPE:

    The ARJ-SECURITY ENVELOPE feature provides a facility similar to
    other archivers.  This feature disallows any type of modification,
    even commenting, to an ARJ-SECURED archive by ARJ.  Moreover, there
    are additional internal checks to determine if the ARJ-SECURED
    archive has been modified in any way.  This EXTRA cost feature is
    intended for use by software developers who distribute their
    software in archived format and is only available for a special
    fee.  However, there can be no guarantee that this mechanism cannot
    be defeated.

    When accessing an ARJ-SECURED archive, ARJ will display a message
    indicating that ARJ is verifying the security envelope.  If the
    envelope is damaged, a message will be displayed indicating so.
    If the envelope is intact, then the ARJ-SECURITY signature of the
    user locking the archive will be displayed.

    If the security envelope has been tampered with or the archive has
    suffered data corruption, ARJ will display a message stating that
    the security envelope has been damaged.  In addition, ARJ will not
    abort processing the archive.  The ARJ "-he" option and the ARJSFX
    "-s" option will skip the envelope verification.  The most likely
    causes of an invalid envelope are that the file was corrupted in
    transmission or that the archive was tampered with.


     KNOWN ARJ ISSUES/PROBLEMS:

    Under MS-DOS 4.01, ARJ may not extract LARGE (greater than 32MB)
    files from multiple volume archives properly.  The "dir" reported
    size may be incorrect.    A simple "CHKDSK /f" will correct the size.
    This problem is due to a BUG in MS-DOS 4.01.  Microsoft Corp has
    fixes available for several DOS 4.01 bugs including this one.

    Due to the inner workings of Turbo C++, ARJ may run out of memory
    if your computer is configured with thousands of bytes of
    environment variables.

    When using a working directory, ARJ does not check for disk space
    before overwriting the original archive.  Be sure you have enough
    space before updating an archive using the "-w" switch.

    Because of a bug with extended archive header processing, you
    should convert to ARJ 2.10 and above as soon as practical.  This
    bug is NOT a current problem because no version of ARJ supports the
    use of the extended header.

    If you have garbled (-g) ARJ archives that were created by ARJ 2.21
    and the garbled files were stored (-m0) by ARJ, you may need to
    refer to ARJ 2.30 to extract those files without getting a CRC
    error.

    TSRs that activate via HOT KEYS may be inhibited by ARJ during
    user keyboard input.  This is a "feature" of the Turbo C++ getc()
    function.  A partial workaround is to use the ARJ "-jyry" option
    to go to single key query mode.

    A similar problem occurs with HYPERDISK and staged writes.
    HYPERDISK's timer delay appears to be inhibited during ARJ user
    keyboard input such as during "Ok to ... volume/diskette?".  This
    causes an error when you swap to the next diskette.  The workaround
    is to use the ARJ "-jyry" option to go to single key query mode.

    There is a reported problem using ARJ and floppy disk drives when
    using the disk cache program SUPER PCKWIK 3.30 with advanced
    diskette support (/D+).  The system may occasionally hang when ARJ
    attempts to read/write the diskette.  You may also get CRC or
    Bad file data errors.  Disabling the SUPER PCKWIK option with /D-
    appears to remove this problem.  Other programs have similar
    problems with this feature of SUPER PCKWIK.


     ARJ ERROR MESSAGES:

    See the document ERRORS.DOC.


     ARJ TECHNICAL SUPPORT:

    I have received many useful suggestions from users all over the
    world.    Many of those suggestions are in this version or will be
    incorporated in later versions of ARJ.

    I will try to resolve software problems with ARJ as they are made
    known to me.  Please notify me of any ARJ problems by mail, email
    or via the ARJ support BBSes mentioned below.  I will strive to
    make ARJ a robust, stable and useful product.

    I will try to support unregistered users during their evaluation
    period, but I reserve the right to limit support to any
    unregistered user if requests become excessive.  Registered users
    will be eligible to receive technical support by telephone.

    ********************************************************************

    To ensure a reply when using the postal system, UNREGISTERED users
    should enclose a stamped self-addressed envelope with your
    correspondence.  Foreign UNREGISTERED corresponders should include
    currency or postal coupons instead of stamps.  Otherwise, your
    correspondence may go unanswered.  This does not apply to ARJ
    business correspondence.

    Your financial support is needed for the ARJ archiver and format to
    succeed.

    ********************************************************************


     ARJ AVAILABILITY:

    The latest version of ARJ can be obtained from the following
    sources:

    ARJ SUPPORT BBSes:  See ARJ_BBS.DOC

    ARJ is available from a number of other BBSes, but I can only vouch
    for the integrity of the archive if the ARJ###.EXE verifies its
    ARJ-SECURITY envelope as valid.  If no security envelope exists,
    then the data has been re-archived and there is no assurance of
    data integrity.

    If none of the above sources are suitable, you may order a copy of
    the latest version of ARJ directly from the author.

    Send a check or money order for five dollars (US) to cover the
    costs of shipping and handling for U.S. delivery.  For foreign
    delivery, send ten dollars (US) to cover shipping and handling.
    Please specify diskette size (3.5 or 5.25 inch);  otherwise, a 3.5
    inch diskette will be shipped.    Please allow a few weeks for
    delivery, longer for foreign deliveries.

    Our address is at the end of this document.


    SDN EXTENSION FILES

    SDN International(sm) is a FidoNet hobby organization which makes
    available for distribution author-direct shareware files to FidoNet
    capable bulletin board systems world wide.  ARJ has been chosen by
    SDN sysops' consensus as its official compression utility.

    Program files distributed via SDN have a copyright ".SDN"
    extension.  Files distributed by SDN after February 1993 can be
    decompressed by ARJ.  Files dated earlier can be decompressed if
    the compression utility SDN previously used is on PATH.

    SDN files are security sealed with their own exclusive security
    seal, FSecure, created by Pacesoft.  This security may be verified
    using the FileTest utility available at the SDN Project AuthorLine
    BBS 203-634-0370 or at most SDN participating BBS sites.

    Shareware authors wishing to distribute shareware by release
    through SDN may contact the same SDN Project AuthorLine BBS.


     DISTRIBUTORS:

    The following are authorized distributors for ARJ.  They provide
    local registration and technical support for ARJ.  Other
    distributors only provide the evaluation version of ARJ.


    In Australia:

    Christian Kraus          Work Phone: [phone]
    Online-Tronics                Fax: [phone]
    Postal Address:            BBS Name: Ontron Australia BBS
    P.O. Box 112             Data Phone: [phone]
    Westgate NSW 2048                 (300-14400 V.32BIS)
    Sydney, Australia

    Real Address:
    1st Floor
    45-49 Crystal Street
    Petersham NSW 2049


    In Brazil:

    Paulo Cesar Breim            Tel: [phone]
    CANAL VIP BBS                Fax: [phone]
    Av. Bernardino deCampos 48 Cj.21    BBS: 889-7222
    Sao Paulo   SP      Brazil           X.25: 0724 111320430
    CEP: 04004-050


    In Denmark:

    Jens Rex                Tel: [phone]
    Prof. Shareware             Fax: [phone]
    Benloese Skel 4 G         CompuServe: 100065,1744
    DK 4100 Ringsted
    Denmark


    In Germany:

    C.A.T. Kommunikations-System        Tel: [phone]
        Systemberatung A. Dunkel                Fax: [phone]
        Koenigsberger Strasse 41           Internet: [e-mail]
        D 65830 Kriftel                      SubNet: [e-mail]
        Germany                             FidoNet: 2:241/6010
                                            Mailbox: [phone]-19200
                                                     [phone] V.32bis
                                                     [phone] V.32 Fido
                                                     [phone] PEP



    In the Netherlands:

    HaSa Software Applications        Tel: [phone]
    P.O. Box 1144                Fax: [phone]
    9701 BC Groningen            BBS: ([phone]
    The Netherlands                  ([phone]


    In the United Kingdom:

    Alan Stocker                Tel: [phone]
    Precision Software Publishing        Fax: [phone]
    3, Valley Court Offices,        BBS: 0223 208094
    Lower Road, Croydon, Nr. Royston,
    Hertfordshire SG8 0HF         CompuServe: 70007,5562
    United Kingdom                     100034,2353


    In the United States:

    Robert and Susan Jung         CompuServe: 72077,445
    ARJ Software               Internet: [e-mail]

    See our address at the end of this document.

     ACKNOWLEDGEMENTS:

    LHARC is the name of an archiver by Haruyasu Yoshizaki.
    PKZIP and ZIP are trademarks of PKWare, Inc.
    PAK is the trademark of NoGate Consulting.

    I wish to express my gratitude to Haruyasu Yoshizaki (Yoshi) for
    developing LHARC and distributing its source code.  LHARC gave me
    the impetus to start studying data compression.  I also wish to
    thank Haruhiko Okumura for providing additional ideas.    His AR001
    and AR002 program provided the basic design for the early versions
    of ARJ.

    I also wish to thank Fabrice BELLARD for LZEXE which is used to
    squish the ARJ SFX modules.

    And my thanks also go to Paul Kocher who contributed the design of
    the new ARJ SECURITY envelope mechanism.

    I wish to thank those who have contributed significantly to the
    development of ARJ.  Those include:

    Soeren Pingel Dalsgaard
    Axel Dunkel
    Jonathan Forbes
    Ron Freimuth
    Brian Godette
    Robb Hufalt
    Arkady Kleyner
    Michael Lawler
    Ken Levitt
    Eberhard Mattes
    Mike McCombs
    Alexander Pruss
    Joseph Teller

    And to the many others who have helped, provided messages of
    support, or provided financial support, THANKS!!!  Because of
    you, I am able to provide FULL-TIME support to ARJ!

    I wish to thank my wife, Susan, and my son, Timothy, for putting
    up with this ARJ obsession.  Their encouragement and support have
    been invaluable.

    But my greatest thanks goes to Almighty God for His inspiration
    and great salvation.  For apart from Him, ARJ could not have been
    done.  John 15:5


     USAGE AND DISTRIBUTION POLICY:

    See LICENSE.DOC file for license policy.


     BRIEF BIOGRAPHY OF THE AUTHOR OF ARJ:

    Robert Jung grew up in Catonsville and Baltimore, Maryland.  He
    graduated from the University of Maryland in 1970.  After a short
    stint in the U.S. Army, he taught chemistry for six years.  From
    teaching he entered the computer programming profession where he
    was employed as a programmer analyst, a network analyst, and a
    senior software engineer.  In late 1990, he developed the ARJ
    archive format and program to meet a personal need in archiving.
    In February of 1991, he released ARJ 1.00 as a shareware product.
    The author currently supports ARJ full-time and resides in
    Norwood, Massachusetts with his wife, Susan, and son, Timothy.


     FINAL COMMENTS:

    I do hope that you find this program as useful as I have.  I would
    appreciate any suggestions to improve this archiver.

    You can reach me at:

    Robert Jung at Channel One BBS        [phone]
    Join the mailbox conference with "j mailbox" to send email to me.

    Robert Jung at Bay State BBS        [phone]

    Robert Jung at FIDONET address:  1:16/390.7

    Robert Jung in the ARJ echo conference available from the Fidonet
    echo backbone.

    Robert Jung in the RIME/RELAYNET ARJ conference.  The national
    number of the ARJ conference is 275.

    Robert Jung in the GT POWER ARJ echo conference.

    ARJ users are encouraged to use the above echoes to submit
    questions, problems, and new features requests.

    Robert Jung in the COMPRESS (ILINK), LHARC (SMARTNET), or ARCHIVERS
    (RIME/RELAYNET) echo conferences.

    Internet address:  [e-mail]

    CompuServe userid: 72077,445

    ***** LOOK FOR AN UPDATED ADDRESS IN 1994 *****

    Robert and Susan Jung
    2606 Village Road West
    Norwood, Massachusetts 02062
    USA

    ***********************************************


      End of document