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+%-*-tex-*-
+% Copyright Michael J. Ferguson, INRS-Telecommunications
+% All rights reserved.
+
+% ============ TeXGraphics Support =============
+% TeXGraphics uses \specials and needs a QMS (QUIC) Laser printer.
+% A Second version produces POSTSCRIPT and assumes TEXTSET'S DVILASER.
+% It should be easily modifiable to other POSTSCRIPT drivers.
+% both \beginTeXGraphics and \btg are redefined in texgraph.tex
+% TeXgraphics is not normally in the format file
+% These commands are necessary to support TeXGraph. They are
+% NOT the commands themselves but rather set up commands
+% to bring them in if needed.
+
+\def\beginTeXGraphics{\silent{\input texgraph\relax}\btg} %postscript form
+\def\begintexgraph{\silent{\input texgraph\relax}\btg} %postscript form
+\let\btg=\beginTeXGraphics
+
+
+% Since a \centergraph or \centerplotfile may be met before
+% TeXgraph is loaded, they must be in the format file.
+% \centergraph needs to be very \long
+\long\def\centergraph#1{\hbox to
+ \hsize{\hss\vbox{#1\vgraphskip}\hgraphskip\hss}}
+\def\centerplotfile#1{\centergraph{\btg\includefile {#1} \etg}}
+
+% ========= end TeXGraphics =========