DLSupC32, DLSupC16, DLSupCX, DLSupCBF, DLSupCBT and
        DLSupCRV Comparison and Summary

  DLSupC32 and DLSupC16 are, relatively, simple to use and are deliberately aimed
at the single file pair text line processing. They contain the basic components
for the entire line of the DLSuperC family. They, also, should serve most users'
text compare requirements.

  DLSupC16 is a holdover from Window's 3.11 days. It is a stable product and no
extensions are planned while DLSupC32 is a more evolving vehicle. Even though
DLSupC32 currently has a fully functioning set of capabilities, it should be
extended, periodically, to include more functions in an attempt to increase a
programmer's problem determination productivity.

  DLSupCX is not as simple to use as DLSupC32 and is aimed at the more complex
task of comparing commonly named files from two file directories with a single
interactive invocation. However, DLSupCX can also be used to do a single text
file pair processing as DLSupC32. The same results should be obtained.

  There have been several added capabilities to the single file pair processing
in DLSupC32 that are not in DLSupCX. Namely, Part Compare of a file, Unordered
List Comparison, Batch invocation and the listing of up to 2048 character records
in Batch Moded are these extra capabilities. They will probably not be implemented
in DLSupCX as DLSupC32 remains the best environment for doing these special items.

  DLSupCBT is similar to DLSupC32 with two exceptions.  It provides for comparing
files at the byte level (versus a text line) and it has the capability for running
batch jobs, as does DLSupCRV. The presentation of DLSupCBT is in the form of a
hexadecimal dump with the printable characters shown of the same line of data.
DlSupCBT has several preference options one which allows the user to do a part
comparison of a portion of the two input files. The DLSupCBT is a special variation
of DLSuperC that can be done on all file types but it details differences at the
lowest byte level.

 DLSupCRV is also very much like DLSupC32 but without input text filters. It,
also, flags all changes even lines that appears to be visually identical. An
example would be lines that have blanks that might be truncated in one file
but not in the other. Another case would be a null line in one file visually
appearing identical as a full line of blanks.

 The DLSupCRV program is designed to be a tool to be used, primarily, in a source
library maintenance environment. It can generate both a "Delta" and an "Undelta"
file. It, also, generates full lines of source in its delta output and has the
added capability of processing Fixed Length Records (i.e., all data records are
equal and no CRLF is needed at the end of each fixed length record).

  DLSupCRV has a batch mode processing capability almost identical to DLSupCBT.
The objective of the batch mode is to allow the user to prepare an input file
which defines a stream of separate jobs to do a set of library processes.


  DLSupC16, DLSupC32, DLSupCX, and DLSupCUT (a package containing both DLSupCRV.EXE
and DLSupCBT.EXE) are separately purchasable shareware download compare programs.
Each are offered at $29.95. Each is aimed at the text line (or byte) compare
environment and allow auditing personnel to audit data files for changes.

  DLSupCBF (DLSuperC for Binary File Directory Compare) - another member of the
DLSuperC family is similar to DLSupCX in useage and degree of complexity.
DLSupCBF is aimed at comparing directory files at the binary-file level and
should be faster and produce results expected of more traditional directory
compare operations that inspects files to determine where the differences exists.

  The user may appreciate the speed of the file level compare (versus the full
line compare) when many file compares are attempted. The significance of the
overhead involved in the complete compare of a directory should not be
underestimated. File compares return only if a file matches or not. There is
no requirement to determine where or how the file differ.

  The advantage of comparing included subdirectories within the initial
directories is an added feature found in few, if any, directory compare
programs. Several users have used DLSupCBF to verify a newly created CD against
the original version. This is a special case of comparing two directory nodes and
all included subdirectories where the two directories are defined as with two
different device addresses.

  DLSupCBF is offered at $21.95.

Shareware Considerations

  This is an announcement for the Shareware versions of the DLSuperC family.
These programs are not meant to be free. They can be downloaded and used, normally,
for a trial period of 30 days. Please try them out and see whether you agree
that - "DLSuperC is the best set of compare programs you have ever used".

  Note: The bookie man won't come and get you just for looking and trying. Yes,
sometimes it takes longer to evaluate a program and decide whether it is worth
registering and become legal. So, I've made it relatively easy to test drive any
of downloaded programs. All unregistered programs have a trial popup panel
displayed prior to execution and only an unregistered notice appearing on top of
the main panel during program execution. The trial popup panel will disappear
after registration and a user or company name will appear in the registry notice
on the primary panel.

  The complete capability of each program is at your disposal in all the trial
versions. Registered users retain their registered status for all, subsequent,
downloaded upgrade versions. A registration invoice file with more details will
be included in the registration package.

  To repeat, the Shareware price for DLSupC16, DLSupC32, DLSupCX, DLSupCUT or
DLSupCRV is a paltry $29.95. DLSupCBF is priced at $21.95 for each copy installed.
Site licenses (i.e., 20, 30, 40+ copies of one registered product at one site)
are allowed to be purchased at a discount rate.

Don Ludlow
