FILEEDIT  -  Philip Taylor, 1991-97
  File Editor for the Atari ST/TT/Falcon computer.
  Written in HiSoft Basic, supplied .TOS file also source code .BAS for people
  who have HiSoft or Power Basic and wish to extend or customise FILEEDIT.

  Philosophy
  FILEEDIT is a cursor-driven editor.  It assumes the file being edited can be
  accommodated in memory:  FILEEDIT.TOS itself occupies c. 32kb.
  FILEEDIT handles  *all*  characters  (bytes)  in  the  range  0-255  without
  exception.  It is therefore highly suitable  for editing files which contain
  text but also special characters, e.g.  font files, printer drivers, import-
  export modules, etc.   Bytes  are  displayed  on  the  screen  using  the ST
  character set (1-255) plus  a  special  symbol  for  nul  (0)  viz. a video-
  reversed ASCII 6.  To distinguish characters 158  and 225 the latter is also
  video-reversed.
  Characters (bytes) 32-126 are entered using  normal keys; 1-31 using control
  keys or the numeric keypad; and 0,  127-255 using the numeric keypad.  Users
  with TOS 2 and higher can use instead the Alt key with the numeric keypad.

  Use:
  Either drag-and-drop the datafile (TOS 2.06 and higher), or double click the
  program whereupon it prints the following prompt:
    File to edit [?]-
  and normally you enter a filename.  A  duff  filename elicits a list of good
  files.  A Return (or Ctrl-C) terminates the program;  ? prints on the screen
  a summary of commands viz.

               F1    = mark one end of block
               F2    = mark other end of block
               F3    = cut block
               F4    = paste block
               F5    = write paste buffer
               Alt T = Top of file
               Alt B = Bottom of file
               Alt F = Find string
               Alt N = Find Next
               Alt R = Replace string
               Alt E = Replace Everywhere
               Alt G = Go to row, column of current screen
               Alt L = report Length of file, and Locate cursor
               Alt I = Insert file
               Alt O = Overlay file
               Alt S = Save file and exit
               Alt A = Save as
               Alt Z = refresh screen
               Undo  = cycle to start of program
               Insert = toggle insert/overwrite mode
               Help = display commands menu
      to enter any ASCII code, press 1-3 numeric keys, then Enter
      to advance cursor 'n' places, press some numeric keys then '+'
      to retard cursor 'n' places, press some numeric keys then '-'
      to amplify a cursor key, use Shift

  The  four  cursor  keys,  Backspace,  Delete   and  Home  all  work  in  the
  conventional way.  As Backspace and Delete  are interpreted, use their ASCII
  codes (8,127) to enter these characters into a file.

  Find (search) and replace strings are  entered  as  for normal editing - all
  bytes are allowed - except that Return  terminates the string.  To include a
  Return character (ASCII 13) in  the  string,  use the numeric keypad method,
  see above.
                             ptaylor@udcf.gla.ac.uk