/usr/proj3/case/95s523/chgenv9.hlp			- RJL 95/2/4
This file is now in $CASE/gen/chgenv9.hlp - RJL 981212

This is a section of the UserManual for chgen v9; this project currently 
resides  under 94s523/94sgen, but will be moved to case/gen/ver_9.

The complete userManual is in 
	/usr/proj3/case/94s523/94sgen/base/doc/manual.tex.

This extract is also in directory /usr/proj3/case/gen/chgenv9.hlp.
 
Note the upward compatibilty from chgen v8 (chgen v9 has switches 
for producing two additional outputs, and changes no other output
of chgen v8)

---------------------------------------------------------------
\subsection{Changes Made in Version 9.0}

The functionality of CHGEN version 9.0 is unchanged from version 8.0.  The
same utility files generated by version 8.0 are output by version 9.0.
A schema file which runs with version 8.0 can be expected to work with
version 9.0 identically.  No command line switches are needed for this
to work.

In addidion, version 9.0 allows a different type of schema file to be
 input as well.
A schema file similar to that accepted by GENDB can now be run by using
the command line switch:
\begin{verbatim}
       -gendbschema
\end{verbatim}
Also, the internal tables TT (Table of Tables) and TA (Table of Attributes)
can also be output to a file by using the command line switch:
\begin{verbatim}
       -metafile
\end{verbatim}
where ``filename.dat'' is the output file which is specified by the
user.

\section{Running CHGEN}

You can find the current executable file to run CHGEN in the directory:
\begin{verbatim}
        /usr/proj3/case/94s523/94sgen/base/executables/CHGEN9.0
\end{verbatim}

If you can not find the executable file to run the current version of
CHGEN, you must copy the source files into your own directory and
build one.  The source files can be found in:
\begin{verbatim}
        /usr/proj3/case/94s523/94sgen/base/src/CHGEN9.0
\end{verbatim}
Once you have created the executable, you no longer need the source
files.

To run the program:
\begin{verbatim}
       chgen9 [command line switches if any] schema_file_name.sch
\end{verbatim}
You can leave off the ``.sch'' suffix when entering the schema file name.
The program will append it at runtime.
\subsection{Environment}

This version of CHGEN does not use graphics and can be run from any
VT100 terminal.  In the UMass Lowell computer science department as
of Spring 1994, you can run this program on the Dungeon terminals,
dial up modem terminals, or the workstations.

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