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diff --git a/graphics/pgf/base/doc/text-en/pgfmanual-en-pgfsys-overview.tex b/graphics/pgf/base/doc/text-en/pgfmanual-en-pgfsys-overview.tex deleted file mode 100644 index ae1875bb9b..0000000000 --- a/graphics/pgf/base/doc/text-en/pgfmanual-en-pgfsys-overview.tex +++ /dev/null @@ -1,79 +0,0 @@ -% Copyright 2018 by Till Tantau -% -% This file may be distributed and/or modified -% -% 1. under the LaTeX Project Public License and/or -% 2. under the GNU Free Documentation License. -% -% See the file doc/generic/pgf/licenses/LICENSE for more details. - - -\section{Design of the System Layer} - -\makeatletter - -\subsection{Driver Files} -\label{section-pgfsys} - -The \pgfname\ system layer mainly consists of a large number of commands -starting with |\pgfsys@|. These commands will be called \emph{system commands} -in the following. The higher layers ``interface'' with the system layer by -calling these commands. The higher layers should never use |\special| commands -directly or even check whether |\pdfoutput| is defined. Instead, all drawing -requests should be ``channeled'' through the system commands. - -The system layer is loaded and set up by the following package: - -\begin{package}{pgfsys} - This file provides ``default implementations'' of all system commands, but - most simply produce a warning that they are not implemented. The actual - implementations of the system commands for a particular driver like, say, - |pdftex| reside in files called |pgfsys-xxxx.sty|, where |xxxx| is the - driver name. These will be called \emph{driver files} in the following. - - When |pgfsys.sty| is loaded, it will try to determine which driver is used - by loading |pgf.cfg|. This file should set up the macro |\pgfsysdriver| - appropriately. The |pgfsys.sty| will input the appropriate - |pgfsys-|\meta{drivername}|.sty|. -\end{package} - -\begin{command}{\pgfsysdriver} - This macro should expand to the name of the driver to be used by |pgfsys|. - The default from |pgf.cfg| is |pgfsys-\Gin@driver|. This is very likely to - be correct if you are using \LaTeX. For plain \TeX, the macro will be set - to |pgfsys-pdftex.def| if |pdftex| is used and to |pgfsys-dvips.def| - otherwise. -\end{command} - -\begin{filedescription}{pgf.cfg} - This file should set up the command |\pgfsysdriver| correctly. If - |\pgfsysdriver| is already set to some value, the driver normally should - not change it. Otherwise, it should make a ``good guess'' at which driver - will be appropriate. -\end{filedescription} - -The currently supported backend drivers are discussed in -Section~\ref{section-drivers}. - - -\subsection{Common Definition Files} - -Some drivers share many |\pgfsys@| commands. For the reason, files defining -these ``common'' commands are available. These files are \emph{not} usable -alone. - -\begin{filedescription}{pgfsys-common-postscript} - This file defines some |\pgfsys@| commands so that they produce appropriate - PostScript code. -\end{filedescription} - -\begin{filedescription}{pgfsys-common-pdf} - This file defines some |\pgfsys@| commands so that they produce appropriate - \textsc{pdf} code. -\end{filedescription} - - -%%% Local Variables: -%%% mode: latex -%%% TeX-master: "pgfmanual" -%%% End: |