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ch3.25
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1994-01-25
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@Section
@Tag { prependgraphic }
@Title { "@PrependGraphic and @SysPrependGraphic" }
@Begin
@PP
prependgraphic.sym @Index { @@PrependGraphic symbol }
sysprependgraphic.sym @Index { @@SysPrependGraphic symbol }
postscript.prependgraphic @SubIndex { used by @@PrependGraphic }
These symbols, which may appear anywhere that a definition or @@Use
symbol may appear, tell Lout to include the contents of a file in the
preamble of its output. For Basser Lout this means that the file must
contain PostScript (and ideally it would begin and end with the
@Code "%%BeginResource" and @Code "%%EndResource" comments of
DSC 3.0). For example,
@ID @Code {
"@SysPrependGraphic { fig_prepend }"
}
appears at the start of the Fig package; the file @Code fig_prepend
contains a number of PostScript definitions used by Fig for drawing
diagrams. It saves a lot of space to include them just once at the
start like this, rather than with every diagram. @@PrependGraphic and
@@SysPrependGraphic search for the file in the same places as @@Include and
@@SysInclude respectively.
@End @Section