The original tgif enhancement was done by Christos Zoulas
<christos@ee.cornell.edu>.  His release is available at:

    ftp://bourbon.cs.umd.edu/pub/tgif/tools/xgraph/xgraph-16jun1991.tar.gz

This release is available at:

    ftp://bourbon.cs.umd.edu/pub/tgif/tools/xgraph/xgraph-16dec1998.tar.gz

This release contains the following modifications made by William C. Cheng
<bill.cheng@acm.org>:

1) To compile under X11R6.

2) The original PostScript file generated by xgraph is not EPS-friendly.
   The PostScript code automatically centers the whole graph on the page.
   This is great if you never want to convert the PS file into an EPS file
   and import it in another tool.

   If you run ps2epsi/pstoepsi with the PS file generated by xgraph, the
   boundingbox information becomes invalid when the EPS file is imported
   by another tool.  This is because the auto-page-centering PostScript
   code generated by xgraph.

   In this release, a command option, "-eps-friendly" is added so that it
   can be used to generate EPS-friendly PostScript files.  One can also
   set the following X resource to achieve the same effect.

        xgraph.EpsFriendlyPS: on

   By default, "xgraph.EpsFriendlyPS" is "off".
   
   Please note that when the EPS-friendly option is selected, auto-rotation
   is not available.  But this is okay because if the PS/EPS file is to be
   embedded by another tool, rotation is not necessary.

   Please see eps-friendly regarding EPS-friendly code changes.

--
Bill Cheng // bill.cheng@acm.org <URL:http://bourbon.cs.umd.edu:8001/william/>