March 31, 1989



                      Using DCOPY with ARCIT SHELL

New as version 1.03 is that ARCIT SHELL can now call DCOPY to add
files to an ARC file, or extract files from an ARC file.  DCOPY was
orignially written by Ralph Walden, and has been extensively modified
by Larry Novak.  There are two main reasons for using DCOPY instead of
the standard ARC program to ARC or unARC files.  First, DCOPY is much
faster than the standard ARC program since it was written in machine
language and since it makes good use of ram buffers.  The second
advantage of DCOPY is that the ARC file size of a collection of files
ARCed with DCOPY is significantly smaller than when the same files
were ARCed with the standard ARC program.  Since the resulting ARC
files for DCOPY are compatable with ARC, you can unARC with either
program, regardless of how the files was ARCed.

In order to use the DCOPY program with ARCIT SHELL, rename any version
of the DCOPY program to DCOPY.TTP and copy it into the same folder as
ARCITSHL.PRG.  (Instead you may copy DCOPY.TTP into the temporary
folder which is specified within the ARCIT SHELL).



                     Major changes to the ARCIT SHELL

Vers 1.00 - Initial program release.

Vers 1.01 - Fix all of the bugs from the initial version.  Now
            it correctly figures out what drives are on line.

Vers 1.02 - ARCIT Shell can now directly call ARC.TTP.  Fixed up
            many of the file selection problems.

Vers 1.03 - ARCIT Shell can now directly call DCOPY.  Standard output
            can now be redirected to the printer.  ARCIT completely
            rewritten to produce tighter faster code.

Vers 1.04 - ARCIT can now call either DCOPY or ARC.  UNARCIT rewitten
            to produce tighter faster code, and can also use either
            DCOPY or ARC to do the actual ARCing or unARCing.

Vers 1.05 - More improvements to the file selector box.  There are
            now two version of the ARCIT SHELL.  One version uses a
            dialog box to select the desired disk drive.  This version
            is for use on ST's with the older TOS rom chips that do
            not have disk drive selector buttons built into the file
            selector box.  The second version is somewhat smaller
            since it relies on the operating system to provide the
            drive selector buttons within the file selector box, such
            as TOS 1.2 (and 1.4?) in the Mega ST's.  You should also
            use this version if you are using the Universal Item
            Selector program.




                                                       G. A. Szekely