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%D \module
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%D   [       file=back-shp,
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%D        version=2018.07.26,
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%D          title=\CONTEXT\ Backend Macros,
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%D       subtitle=Alternative Backends,
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%D         author=Hans Hagen,
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%D           date=\currentdate,
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%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
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%C
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%C This module is part of the \CONTEXT\ macro||package and is
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%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
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%C details.
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%D This is only for exploring and testing, not (yet) for real
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%D production usage.
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\writestatus
{
loading
}{
ConTeXt
 
Backend
 
Macros
 
/
 
Initialization
}
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\registerctxluafile
{
back
-
shp
}{
optimize
}
 
% shipper framework
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\registerctxluafile
{
back
-
lpd
}{
optimize
}
 
% alternative backend
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\registerctxluafile
{
back
-
mps
}{
optimize
}
 
% alternative backend
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\registerctxluafile
{
back
-
lua
}{
optimize
}
 
% alternative backend
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\unprotect
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% use shipout callback
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\def
\page_shipout_box_pdf
#
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%
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{
\clf_shipoutpage
#
1
\relax
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\setbox
#
1
\emptybox
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\global\deadcycles
\zerocount
}
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\unexpanded
\def
\enablelmtx
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{
\clf_enableshipout
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\let
\page_shipout_box
\page_shipout_box_pdf
}
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\protect
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