Option M -- File Mode. FILT has four file modes: "Source Code" for ASCII assembler source code; "ASCII Text" for ordinary ASCII text files; "WordStar W" for WordStar document files (removes dot commands); and "WordStar D" for WordStar document files (retains dot commands). Any of these modes can be made the default. See the accompanying help file for details on the differences between these modes. Whatever mode is chosen as the default can be changed with the "S", "A", "W", or "D" command line options. Option T -- Tabbing Mode. If "As Found" is chosen, tabs and spaces will be left as they are found by default. Otherwise, tabs will always be expanded to spaces on input. If "Re-Tab" is chosen, then FILT will re-tab the file on output. The chosen default can be overridden with the "T", "E", or "K" command line options. Option F -- Retain form feeds. FILT normally removes form feeds from ASCII text and source code files by default. Choosing "Yes" causes form feeds to be retained. The default selected here can be toggled with the command line "F" option. (Form feeds are never removed in the WordStar modes.) Option Q -- Quiet Mode. This option determines whether FILT will be in verbose or quiet mode by default (except that FILT always defaults to quiet mode if the ZCPR3 quiet flag is set). The default may be toggled with the command line "Q" option. Option C -- Error on user abort. Pick "Yes" if you want the program error flag set when FILT is aborted via a ^C from the console. In that case the error handler will be invoked (if one is installed), allowing the user to also abort a running SUB or ZEX batch job. That can be very useful. If you would rather not have the aggravation, however, select "No" and an abort will not be considered an error. Option P -- Progress Reports. Normally FILT displays a running line count while it is working. This report can be suppressed by selecting "No".