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+% \iffalse meta-comment
+%
+% Copyright (C) 2009 by Heiko Oberdiek <oberdiek@uni-freiburg.de>
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either
+% version 1.3 of this license or (at your option) any later
+% version. The latest version of this license is in
+% http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of
+% LaTeX version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+%
+% This Current Maintainer of this work is Heiko Oberdiek.
+%
+% This work consists of the main source file pagegrid.dtx
+% and the derived files
+% pagegrid.sty, pagegrid.pdf, pagegrid.ins, pagegrid.drv,
+% pagegrid-test1.tex.
+%
+% Distribution:
+% CTAN:macros/latex/contrib/oberdiek/pagegrid.dtx
+% CTAN:macros/latex/contrib/oberdiek/pagegrid.pdf
+%
+% Unpacking:
+% (a) If pagegrid.ins is present:
+% tex pagegrid.ins
+% (b) Without pagegrid.ins:
+% tex pagegrid.dtx
+% (c) If you insist on using LaTeX
+% latex \let\install=y\input{pagegrid.dtx}
+% (quote the arguments according to the demands of your shell)
+%
+% Documentation:
+% (a) If pagegrid.drv is present:
+% latex pagegrid.drv
+% (b) Without pagegrid.drv:
+% latex pagegrid.dtx; ...
+% The class ltxdoc loads the configuration file ltxdoc.cfg
+% if available. Here you can specify further options, e.g.
+% use A4 as paper format:
+% \PassOptionsToClass{a4paper}{article}
+%
+% Programm calls to get the documentation (example):
+% pdflatex pagegrid.dtx
+% makeindex -s gind.ist pagegrid.idx
+% pdflatex pagegrid.dtx
+% makeindex -s gind.ist pagegrid.idx
+% pdflatex pagegrid.dtx
+%
+% Installation:
+% TDS:tex/generic/oberdiek/pagegrid.sty
+% TDS:doc/latex/oberdiek/pagegrid.pdf
+% TDS:doc/latex/oberdiek/test/pagegrid-test1.tex
+% TDS:source/latex/oberdiek/pagegrid.dtx
+%
+%<*ignore>
+\begingroup
+ \def\x{LaTeX2e}%
+\expandafter\endgroup
+\ifcase 0\ifx\install y1\fi\expandafter
+ \ifx\csname processbatchFile\endcsname\relax\else1\fi
+ \ifx\fmtname\x\else 1\fi\relax
+\else\csname fi\endcsname
+%</ignore>
+%<*install>
+\input docstrip.tex
+\Msg{************************************************************************}
+\Msg{* Installation}
+\Msg{* Package: pagegrid 2009/12/04 v1.4 Print page grid in background (HO)}
+\Msg{************************************************************************}
+
+\keepsilent
+\askforoverwritefalse
+
+\let\MetaPrefix\relax
+\preamble
+
+This is a generated file.
+
+Copyright (C) 2009 by Heiko Oberdiek <oberdiek@uni-freiburg.de>
+
+This work may be distributed and/or modified under the
+conditions of the LaTeX Project Public License, either
+version 1.3 of this license or (at your option) any later
+version. The latest version of this license is in
+ http://www.latex-project.org/lppl.txt
+and version 1.3 or later is part of all distributions of
+LaTeX version 2005/12/01 or later.
+
+This work has the LPPL maintenance status "maintained".
+
+This Current Maintainer of this work is Heiko Oberdiek.
+
+This work consists of the main source file pagegrid.dtx
+and the derived files
+ pagegrid.sty, pagegrid.pdf, pagegrid.ins, pagegrid.drv,
+ pagegrid-test1.tex.
+
+\endpreamble
+\let\MetaPrefix\DoubleperCent
+
+\generate{%
+ \file{pagegrid.ins}{\from{pagegrid.dtx}{install}}%
+ \file{pagegrid.drv}{\from{pagegrid.dtx}{driver}}%
+ \usedir{tex/generic/oberdiek}%
+ \file{pagegrid.sty}{\from{pagegrid.dtx}{package}}%
+ \usedir{doc/latex/oberdiek/test}%
+ \file{pagegrid-test1.tex}{\from{pagegrid.dtx}{test1}}%
+}
+
+\obeyspaces
+\Msg{************************************************************************}
+\Msg{*}
+\Msg{* To finish the installation you have to move the following}
+\Msg{* file into a directory searched by TeX:}
+\Msg{*}
+\Msg{* pagegrid.sty}
+\Msg{*}
+\Msg{* And install the following script file:}
+\Msg{*}
+\Msg{* }
+\Msg{*}
+\Msg{* To produce the documentation run the file `pagegrid.drv'}
+\Msg{* through LaTeX.}
+\Msg{*}
+\Msg{* Happy TeXing!}
+\Msg{*}
+\Msg{************************************************************************}
+
+\endbatchfile
+%</install>
+%<*ignore>
+\fi
+%</ignore>
+%<*driver>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesFile{pagegrid.drv}%
+ [2009/12/04 v1.4 Print page grid in background (HO)]%
+\documentclass{ltxdoc}
+\usepackage{holtxdoc}[2008/08/11]
+\begin{document}
+ \DocInput{pagegrid.dtx}%
+\end{document}
+%</driver>
+% \fi
+%
+% \CheckSum{624}
+%
+% \CharacterTable
+% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
+% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
+% Digits \0\1\2\3\4\5\6\7\8\9
+% Exclamation \! Double quote \" Hash (number) \#
+% Dollar \$ Percent \% Ampersand \&
+% Acute accent \' Left paren \( Right paren \)
+% Asterisk \* Plus \+ Comma \,
+% Minus \- Point \. Solidus \/
+% Colon \: Semicolon \; Less than \<
+% Equals \= Greater than \> Question mark \?
+% Commercial at \@ Left bracket \[ Backslash \\
+% Right bracket \] Circumflex \^ Underscore \_
+% Grave accent \` Left brace \{ Vertical bar \|
+% Right brace \} Tilde \~}
+%
+% \GetFileInfo{pagegrid.drv}
+%
+% \title{The \xpackage{pagegrid} package}
+% \date{2009/12/04 v1.4}
+% \author{Heiko Oberdiek\\\xemail{oberdiek@uni-freiburg.de}}
+%
+% \maketitle
+%
+% \begin{abstract}
+% The \LaTeX\ package prints a page grid in the background.
+% \end{abstract}
+%
+% \tableofcontents
+%
+% \section{Documentation}
+%
+% The package puts a grid on the paper. It was written for
+% developers of a class or package
+% who have to put elements on definite locations on a page
+% (e.g. letter class). The grid allows a faster optical check,
+% whether the positions are correct. If the previewer already
+% offers features for measuring, the the package might be obsolete.
+% Otherwise it saves the developer from printing the page and
+% measuring by hand.
+%
+% \subsection{Options}
+%
+% Options are evaluated in the following order:
+% \begin{enumerate}
+% \item
+% Configuration file \xfile{pagegrid.cfg} using \cs{pagegridsetup}
+% if the file exists.
+% \item
+% Package options given for \cs{usepackage}.
+% \item
+% Later calls of \cs{pagegridsetup}.
+% \end{enumerate}
+% \begin{declcs}{pagegridsetup}\M{option list}
+% \end{declcs}
+% The options are key value options. Boolean options are enabled by
+% default (without value) or by using the explicit value \texttt{true}.
+% Value \texttt{false} disable the option.
+%
+% \subsubsection{Options \xoption{enable}, \xoption{disable}}
+%
+% \begin{description}
+% \item[\xoption{enable}:] This boolean option controls whether the page grid
+% is drawn. As default the page grid drawing is activated.
+% \item[\xoption{disable}:] It is the opposite
+% of option \xoption{enable}. It was added for convenience and
+% allows the abbreviation \texttt{disable} for \texttt{enable=false}.
+% \end{description}
+%
+% \subsubsection{Grid origins}
+%
+% The package supports up to two grids on a page allowing
+% measurement from opposite directions. As default two grids are drawn,
+% the first from bottom left to top right. The origin of the second
+% grid is at the opposite top right corner.
+% The origins are controlled by the following options.
+% The number of grids (one or two) depend on the number of these options
+% in one call of \cs{pagegridsetup}.
+% The following frame shows a paper and in its corners are the
+% corresponding options. At the left and right side alias names
+% are given for the options inside the paper.
+% \begin{quote}
+% \begin{tabular}{@{}r|@{\,}l@{\qquad}r@{\,}|l@{}}
+% \cline{2-3}
+% \xoption{left-top}, \xoption{lt}, \xoption{top-left}
+% & \vphantom{\"U}\xoption{tl} & \xoption{tr}
+% & \xoption{top-right}, \xoption{rt}, \xoption{right-top}\\
+% &&&\\
+% \xoption{left-bottom}, \xoption{lb}, \xoption{bottom-left}
+% & \xoption{bl} & \xoption{br}
+% & \xoption{bottom-right}, \xoption{rb}, \xoption{right-bottom}\\
+% \cline{2-3}
+% \end{tabular}
+% \end{quote}
+% Examples:
+% \begin{quote}
+% |\pagegridsetup{bl,tr}|
+% \end{quote}
+% This is the default setting with two grids as described previously.
+% The following setups one grid only. Its origin is the upper left
+% corner:
+% \begin{quote}
+% |\pagegridsetup{top-left}|
+% \end{quote}
+%
+% \subsubsection{Grid unit}
+%
+% \begin{description}
+% \item[\xoption{step}] This option takes a length and
+% setups the unit for the grid. The page width and page height
+% should be multiples of this unit.
+% Currently the default is \texttt{1mm}. But this might change
+% later by a heuristic based on the paper size.
+% \end{description}
+%
+% \subsubsection{Color options}
+%
+% The basic grid lines are drawn as ultra thin help lines and is only
+% drawn for the first grid.
+% Each tenth and fiftyth line of the basic net is drawn thicker in a special
+% color for the two grids.
+% \begin{description}
+% \item[\xoption{firstcolor}:] Color for the thicker lines and the arrows
+% of the first grid. Default value is \texttt{red}.
+% \item[\xoption{secondcolor}:] Color for the thicker lines and the arrows
+% of the second grid. Default value is \texttt{blue}.
+% \end{description}
+% Use a color specification that package \xpackage{tikz} understands.
+% (The grid is drawn with \xpackage{pgf}/\xpackage{tikz}.)
+%
+% \subsubsection{Arrow options}
+%
+% Arrows are put at the origin at the grid to show the grid start
+% and the direction of the grid.
+% \begin{description}
+% \item[\xoption{arrows}:] This boolean option turns the arrows on or off.
+% As default arrows are enabled.
+% \item[\xoption{arrowlength}:] The length given as value is the
+% length of the edge of a square at the origin within the
+% arrow is put as diagonal. Default is 10 times the grid unit (10\,mm).
+% The real arrow length is this length multiplied by $\sqrt2$.
+% \end{description}
+%
+% \subsubsection{Miscellaneous options}
+%
+% \begin{description}
+% \item[\xoption{double}:] The output page is doubled, one without page
+% grid and the other with page grid. Possible values are shown in the
+% following table:
+% \begin{quote}
+% \begin{tabular}{ll}
+% Option & Meaning\\
+% \hline
+% |false| & Turns option off.\\
+% |first| & Grid page comes first.\\
+% |last| & Grid page comes after the page without grid.\\
+% |true| & Same as |last|.\\
+% \meta{no value} & Same as |true|.\\
+% \end{tabular}
+% \end{quote}
+% \textbf{Note:}
+% The double output of the page has side effects.
+% All whatits are executed twice, for example: file writing
+% and anchor setting. Some unwanted actions are catched such
+% as multiple \cs{label} definitions, duplicate entries in
+% the table of contents. For bookmarks, use package \xpackage{bookmarks}.
+% \item[\xoption{foreground}:] Boolean option, default is \texttt{false}.
+% Sometimes there might be elements on the page (e.g. large images)
+% that hide the grid. Then option \xoption{foreground} puts the grids
+% over the current output page.
+% \end{description}
+%
+% \StopEventually{
+% }
+%
+% \section{Implementation}
+% \begin{macrocode}
+%<*package>
+% \end{macrocode}
+% Reload check, especially if the package is not used with \LaTeX.
+% \begin{macrocode}
+\begingroup
+ \catcode44 12 % ,
+ \catcode45 12 % -
+ \catcode46 12 % .
+ \catcode58 12 % :
+ \catcode64 11 % @
+ \catcode123 1 % {
+ \catcode125 2 % }
+ \expandafter\let\expandafter\x\csname ver@pagegrid.sty\endcsname
+ \ifx\x\relax % plain-TeX, first loading
+ \else
+ \def\empty{}%
+ \ifx\x\empty % LaTeX, first loading,
+ % variable is initialized, but \ProvidesPackage not yet seen
+ \else
+ \catcode35 6 % #
+ \expandafter\ifx\csname PackageInfo\endcsname\relax
+ \def\x#1#2{%
+ \immediate\write-1{Package #1 Info: #2.}%
+ }%
+ \else
+ \def\x#1#2{\PackageInfo{#1}{#2, stopped}}%
+ \fi
+ \x{pagegrid}{The package is already loaded}%
+ \aftergroup\endinput
+ \fi
+ \fi
+\endgroup
+% \end{macrocode}
+% Package identification:
+% \begin{macrocode}
+\begingroup
+ \catcode35 6 % #
+ \catcode40 12 % (
+ \catcode41 12 % )
+ \catcode44 12 % ,
+ \catcode45 12 % -
+ \catcode46 12 % .
+ \catcode47 12 % /
+ \catcode58 12 % :
+ \catcode64 11 % @
+ \catcode91 12 % [
+ \catcode93 12 % ]
+ \catcode123 1 % {
+ \catcode125 2 % }
+ \expandafter\ifx\csname ProvidesPackage\endcsname\relax
+ \def\x#1#2#3[#4]{\endgroup
+ \immediate\write-1{Package: #3 #4}%
+ \xdef#1{#4}%
+ }%
+ \else
+ \def\x#1#2[#3]{\endgroup
+ #2[{#3}]%
+ \ifx#1\@undefined
+ \xdef#1{#3}%
+ \fi
+ \ifx#1\relax
+ \xdef#1{#3}%
+ \fi
+ }%
+ \fi
+\expandafter\x\csname ver@pagegrid.sty\endcsname
+\ProvidesPackage{pagegrid}%
+ [2009/12/04 v1.4 Print page grid in background (HO)]
+% \end{macrocode}
+%
+% \begin{macrocode}
+\begingroup
+ \catcode123 1 % {
+ \catcode125 2 % }
+ \def\x{\endgroup
+ \expandafter\edef\csname pagegrid@AtEnd\endcsname{%
+ \catcode35 \the\catcode35\relax
+ \catcode64 \the\catcode64\relax
+ \catcode123 \the\catcode123\relax
+ \catcode125 \the\catcode125\relax
+ }%
+ }%
+\x
+\catcode35 6 % #
+\catcode64 11 % @
+\catcode123 1 % {
+\catcode125 2 % }
+\def\TMP@EnsureCode#1#2{%
+ \edef\pagegrid@AtEnd{%
+ \pagegrid@AtEnd
+ \catcode#1 \the\catcode#1\relax
+ }%
+ \catcode#1 #2\relax
+}
+\TMP@EnsureCode{9}{10}% (tab)
+\TMP@EnsureCode{10}{12}% ^^J
+\TMP@EnsureCode{33}{12}% !
+\TMP@EnsureCode{34}{12}% "
+\TMP@EnsureCode{36}{3}% $
+\TMP@EnsureCode{38}{4}% &
+\TMP@EnsureCode{39}{12}% '
+\TMP@EnsureCode{40}{12}% (
+\TMP@EnsureCode{41}{12}% )
+\TMP@EnsureCode{42}{12}% *
+\TMP@EnsureCode{43}{12}% +
+\TMP@EnsureCode{44}{12}% ,
+\TMP@EnsureCode{45}{12}% -
+\TMP@EnsureCode{46}{12}% .
+\TMP@EnsureCode{47}{12}% /
+\TMP@EnsureCode{58}{12}% :
+\TMP@EnsureCode{59}{12}% ;
+\TMP@EnsureCode{60}{12}% <
+\TMP@EnsureCode{61}{12}% =
+\TMP@EnsureCode{62}{12}% >
+\TMP@EnsureCode{63}{12}% ?
+\TMP@EnsureCode{91}{12}% [
+\TMP@EnsureCode{93}{12}% ]
+\TMP@EnsureCode{94}{7}% ^ (superscript)
+\TMP@EnsureCode{96}{12}% `
+\TMP@EnsureCode{124}{12}% |
+% \end{macrocode}
+%
+% \begin{macrocode}
+\RequirePackage{tikz}
+\RequirePackage{atbegshi}[2009/12/02]
+\RequirePackage{kvoptions}[2009/07/17]
+% \end{macrocode}
+% \begin{macrocode}
+\begingroup\expandafter\expandafter\expandafter\endgroup
+\expandafter\ifx\csname stockwidth\endcsname\relax
+ \def\pagegrid@width{\paperwidth}%
+ \def\pagegrid@height{\paperheight}%
+\else
+ \def\pagegrid@width{\stockwidth}%
+ \def\pagegrid@height{\stockheight}%
+\fi
+% \end{macrocode}
+%
+% \begin{macrocode}
+\SetupKeyvalOptions{%
+ family=pagegrid,%
+ prefix=pagegrid@,%
+}
+\def\pagegrid@init{%
+ \let\pagegrid@origin@a\@empty
+ \let\pagegrid@origin@b\@empty
+ \let\pagegrid@init\relax
+}
+\let\pagegrid@@init\pagegrid@init
+\def\pagegrid@origin@a{bl}
+\def\pagegrid@origin@b{tr}
+\def\pagegrid@SetOrigin#1{%
+ \pagegrid@init
+ \ifx\pagegrid@origin@a\@empty
+ \def\pagegrid@origin@a{#1}%
+ \else
+ \ifx\pagegrid@origin@b\@empty
+ \else
+ \let\pagegrid@origin@a\pagegrid@origin@b
+ \fi
+ \def\pagegrid@origin@b{#1}%
+ \fi
+}
+\def\pagegrid@temp#1{%
+ \DeclareVoidOption{#1}{\pagegrid@SetOrigin{#1}}%
+ \@namedef{pagegrid@N@#1}{#1}%
+}
+\pagegrid@temp{bl}
+\pagegrid@temp{br}
+\pagegrid@temp{tl}
+\pagegrid@temp{tr}
+\def\pagegrid@temp#1#2{%
+ \DeclareVoidOption{#2}{\pagegrid@SetOrigin{#1}}%
+}%
+\pagegrid@temp{bl}{lb}
+\pagegrid@temp{br}{rb}
+\pagegrid@temp{tl}{lt}
+\pagegrid@temp{tr}{rt}
+\pagegrid@temp{bl}{bottom-left}
+\pagegrid@temp{br}{bottom-right}
+\pagegrid@temp{tl}{top-left}
+\pagegrid@temp{tr}{top-right}
+\pagegrid@temp{bl}{left-bottom}
+\pagegrid@temp{br}{right-bottom}
+\pagegrid@temp{tl}{left-top}
+\pagegrid@temp{tr}{right-top}
+% \end{macrocode}
+% \begin{macrocode}
+\DeclareBoolOption[true]{enable}
+\DeclareComplementaryOption{disable}{enable}
+% \end{macrocode}
+% \begin{macrocode}
+\DeclareBoolOption{foreground}
+% \end{macrocode}
+% \begin{macrocode}
+\newlength{\pagegrid@step}
+\define@key{pagegrid}{step}{%
+ \setlength{\pagegrid@step}{#1}%
+}
+% \end{macrocode}
+% \begin{macrocode}
+\DeclareStringOption[red]{firstcolor}
+\DeclareStringOption[blue]{secondcolor}
+% \end{macrocode}
+% \begin{macrocode}
+\DeclareBoolOption[true]{arrows}
+\newlength\pagegrid@arrowlength
+\pagegrid@arrowlength=\z@
+\define@key{pagegrid}{arrowlength}{%
+ \setlength{\pagegrid@arrowlength}{#1}%
+}
+% \end{macrocode}
+% \begin{macrocode}
+\define@key{pagegrid}{double}[true]{%
+ \@ifundefined{pagegrid@double@#1}{%
+ \PackageWarning{pagegrid}{%
+ Unsupported value `#1' for option `double'.\MessageBreak
+ Known values are:\MessageBreak
+ `false', `first', `last', `true'.\MessageBreak
+ Now `false' is used%
+ }%
+ \chardef\pagegrid@double\z@
+ }{%
+ \chardef\pagegrid@double\csname pagegrid@double@#1\endcsname\relax
+ }%
+}
+\@namedef{pagegrid@double@false}{0}
+\@namedef{pagegrid@double@first}{1}
+\@namedef{pagegrid@double@last}{2}
+\@namedef{pagegrid@double@true}{2}
+\chardef\pagegrid@double\z@
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand*{\pagegridsetup}{%
+ \let\pagegrid@init\pagegrid@@init
+ \setkeys{pagegrid}%
+}
+% \end{macrocode}
+% \begin{macrocode}
+\pagegridsetup{%
+ step=1mm%
+}
+\InputIfFileExists{pagegrid.cfg}{}%
+\ProcessKeyvalOptions*\relax
+\AtBeginDocument{%
+ \ifdim\pagegrid@arrowlength>\z@
+ \else
+ \pagegrid@arrowlength=10\pagegrid@step
+ \fi
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\pagegridShipoutDoubleBegin{%
+ \begingroup
+ \let\newlabel\@gobbletwo
+ \let\zref@newlabel\@gobbletwo
+ \let\@writefile\@gobbletwo
+ \let\select@language\@gobble
+}
+\def\pagegridShipoutDoubleEnd{%
+ \endgroup
+}
+\def\pagegrid@WriteDouble#1#2{%
+ \immediate\write#1{%
+ \@backslashchar csname %
+ pagegridShipoutDouble#2%
+ \@backslashchar endcsname%
+ }%
+}
+\def\pagegrid@ShipoutDouble#1{%
+ \begingroup
+ \if@filesw
+ \pagegrid@WriteDouble\@mainaux{Begin}%
+ \ifx\@auxout\@partaux
+ \pagegrid@WriteDouble\@partaux{Begin}%
+ \def\pagegrid@temp{%
+ \pagegrid@WriteDouble\@mainaux{End}%
+ \pagegrid@WriteDouble\@partaux{End}%
+ }%
+ \else
+ \def\pagegrid@temp{%
+ \pagegrid@WriteDouble\@mainaux{End}%
+ }%
+ \fi
+ \else
+ \def\pagegrid@temp{}%
+ \fi
+ \let\protect\noexpand
+ \AtBeginShipoutOriginalShipout\copy#1\relax
+ \pagegrid@temp
+ \endgroup
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\AtBeginShipout{%
+ \ifdim\pagegrid@step>\z@
+ \else
+ \pagegrid@enablefalse
+ \fi
+ \ifpagegrid@enable
+ \ifnum\pagegrid@double=\@ne
+ \pagegrid@ShipoutDouble\AtBeginShipoutBox
+ \else
+ \ifnum\pagegrid@double=\tw@
+ \@ifundefined{pagegrid@DoubleBox}{%
+ \newbox\pagegrid@DoubleBox
+ }{}%
+ \setbox\pagegrid@DoubleBox=\copy\AtBeginShipoutBox
+ \fi
+ \fi
+ \ifpagegrid@foreground
+ \expandafter\AtBeginShipoutUpperLeftForeground
+ \else
+ \expandafter\AtBeginShipoutUpperLeft
+ \fi
+ {%
+ \put(0,0){%
+ \makebox(0,0)[lt]{%
+ \begin{tikzpicture}[%
+ bl/.style={},%
+ br/.style={xshift=\pagegrid@width,xscale=-1},%
+ tl/.style={yshift=\pagegrid@height,yscale=-1},%
+ tr/.style={xshift=\pagegrid@width,%
+ yshift=\pagegrid@height,scale=-1}%
+ ]%
+ \useasboundingbox
+ (0mm,\pagegrid@height) rectangle (0mm,\pagegrid@height);%
+ \draw[%
+ \pagegrid@origin@a,%
+ step=\pagegrid@step,%
+ style=help lines,%
+ ultra thin%
+ ] (0mm,0mm) grid (\pagegrid@width,\pagegrid@height);%
+ \ifx\pagegrid@origin@b\@empty
+ \else
+ \draw[%
+ \pagegrid@origin@b,%
+ step=10\pagegrid@step,%
+ {\pagegrid@secondcolor},%
+ very thin%
+ ] (0mm,0mm) grid (\pagegrid@width,\pagegrid@height);%
+ \fi
+ \draw[%
+ \pagegrid@origin@a,%
+ step=10\pagegrid@step,%
+ {\pagegrid@firstcolor},%
+ very thin%
+ ] (0mm,0mm) grid (\pagegrid@width,\pagegrid@height);%
+ \ifx\pagegrid@origin@b\@empty
+ \else
+ \draw[%
+ \pagegrid@origin@b,%
+ step=50\pagegrid@step,%
+ {\pagegrid@secondcolor},%
+ thick%
+ ] (0mm,0mm) grid (\pagegrid@width,\pagegrid@height);%
+ \fi
+ \draw[%
+ \pagegrid@origin@a,%
+ step=50\pagegrid@step,%
+ {\pagegrid@firstcolor},%
+ thick%
+ ] (0mm,0mm) grid (\pagegrid@width,\pagegrid@height);%
+ \ifpagegrid@arrows
+ \ifx\pagegrid@origin@b\@empty
+ \else
+ \draw[%
+ \pagegrid@origin@b,%
+ {\pagegrid@secondcolor},%
+ stroke,%
+ line width=1pt,%
+ line cap=round%
+ ] (0mm,0mm) %
+ -- (\pagegrid@arrowlength,\pagegrid@arrowlength) %
+ (\pagegrid@arrowlength,.5\pagegrid@arrowlength) %
+ -- (\pagegrid@arrowlength,\pagegrid@arrowlength) %
+ -- (.5\pagegrid@arrowlength,\pagegrid@arrowlength);%
+ \fi
+ \draw[%
+ \pagegrid@origin@a,%
+ {\pagegrid@firstcolor},%
+ stroke,%
+ line width=1pt,%
+ line cap=round%
+ ] (0mm,0mm) %
+ -- (\pagegrid@arrowlength,\pagegrid@arrowlength) %
+ (\pagegrid@arrowlength,.5\pagegrid@arrowlength) %
+ -- (\pagegrid@arrowlength,\pagegrid@arrowlength) %
+ -- (.5\pagegrid@arrowlength,\pagegrid@arrowlength);%
+ \fi
+ \end{tikzpicture}%
+ }%
+ }%
+ }%
+ \ifnum\pagegrid@double=\tw@
+ \pagegrid@ShipoutDouble\pagegrid@DoubleBox
+ \fi
+ \fi
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\pagegrid@AtEnd
+%</package>
+% \end{macrocode}
+%
+% \section{Test}
+%
+% \subsection{Catcode checks for loading}
+%
+% \begin{macrocode}
+%<*test1>
+% \end{macrocode}
+% \begin{macrocode}
+\catcode`\{=1 %
+\catcode`\}=2 %
+\catcode`\#=6 %
+\catcode`\@=11 %
+\expandafter\ifx\csname count@\endcsname\relax
+ \countdef\count@=255 %
+\fi
+\expandafter\ifx\csname @gobble\endcsname\relax
+ \long\def\@gobble#1{}%
+\fi
+\expandafter\ifx\csname @firstofone\endcsname\relax
+ \long\def\@firstofone#1{#1}%
+\fi
+\expandafter\ifx\csname loop\endcsname\relax
+ \expandafter\@firstofone
+\else
+ \expandafter\@gobble
+\fi
+{%
+ \def\loop#1\repeat{%
+ \def\body{#1}%
+ \iterate
+ }%
+ \def\iterate{%
+ \body
+ \let\next\iterate
+ \else
+ \let\next\relax
+ \fi
+ \next
+ }%
+ \let\repeat=\fi
+}%
+\def\RestoreCatcodes{}
+\count@=0 %
+\loop
+ \edef\RestoreCatcodes{%
+ \RestoreCatcodes
+ \catcode\the\count@=\the\catcode\count@\relax
+ }%
+\ifnum\count@<255 %
+ \advance\count@ 1 %
+\repeat
+
+\def\RangeCatcodeInvalid#1#2{%
+ \count@=#1\relax
+ \loop
+ \catcode\count@=15 %
+ \ifnum\count@<#2\relax
+ \advance\count@ 1 %
+ \repeat
+}
+\expandafter\ifx\csname LoadCommand\endcsname\relax
+ \def\LoadCommand{\input pagegrid.sty\relax}%
+\fi
+\def\Test{%
+ \RangeCatcodeInvalid{0}{47}%
+ \RangeCatcodeInvalid{58}{64}%
+ \RangeCatcodeInvalid{91}{96}%
+ \RangeCatcodeInvalid{123}{255}%
+ \catcode`\@=12 %
+ \catcode`\\=0 %
+ \catcode`\{=1 %
+ \catcode`\}=2 %
+ \catcode`\#=6 %
+ \catcode`\[=12 %
+ \catcode`\]=12 %
+ \catcode`\%=14 %
+ \catcode`\ =10 %
+ \catcode13=5 %
+ \LoadCommand
+ \RestoreCatcodes
+}
+\Test
+\csname @@end\endcsname
+\end
+% \end{macrocode}
+% \begin{macrocode}
+%</test1>
+% \end{macrocode}
+%
+% \section{Installation}
+%
+% \subsection{Download}
+%
+% \paragraph{Package.} This package is available on
+% CTAN\footnote{\url{ftp://ftp.ctan.org/tex-archive/}}:
+% \begin{description}
+% \item[\CTAN{macros/latex/contrib/oberdiek/pagegrid.dtx}] The source file.
+% \item[\CTAN{macros/latex/contrib/oberdiek/pagegrid.pdf}] Documentation.
+% \end{description}
+%
+%
+% \paragraph{Bundle.} All the packages of the bundle `oberdiek'
+% are also available in a TDS compliant ZIP archive. There
+% the packages are already unpacked and the documentation files
+% are generated. The files and directories obey the TDS standard.
+% \begin{description}
+% \item[\CTAN{install/macros/latex/contrib/oberdiek.tds.zip}]
+% \end{description}
+% \emph{TDS} refers to the standard ``A Directory Structure
+% for \TeX\ Files'' (\CTAN{tds/tds.pdf}). Directories
+% with \xfile{texmf} in their name are usually organized this way.
+%
+% \subsection{Bundle installation}
+%
+% \paragraph{Unpacking.} Unpack the \xfile{oberdiek.tds.zip} in the
+% TDS tree (also known as \xfile{texmf} tree) of your choice.
+% Example (linux):
+% \begin{quote}
+% |unzip oberdiek.tds.zip -d ~/texmf|
+% \end{quote}
+%
+% \paragraph{Script installation.}
+% Check the directory \xfile{TDS:scripts/oberdiek/} for
+% scripts that need further installation steps.
+% Package \xpackage{attachfile2} comes with the Perl script
+% \xfile{pdfatfi.pl} that should be installed in such a way
+% that it can be called as \texttt{pdfatfi}.
+% Example (linux):
+% \begin{quote}
+% |chmod +x scripts/oberdiek/pdfatfi.pl|\\
+% |cp scripts/oberdiek/pdfatfi.pl /usr/local/bin/|
+% \end{quote}
+%
+% \subsection{Package installation}
+%
+% \paragraph{Unpacking.} The \xfile{.dtx} file is a self-extracting
+% \docstrip\ archive. The files are extracted by running the
+% \xfile{.dtx} through \plainTeX:
+% \begin{quote}
+% \verb|tex pagegrid.dtx|
+% \end{quote}
+%
+% \paragraph{TDS.} Now the different files must be moved into
+% the different directories in your installation TDS tree
+% (also known as \xfile{texmf} tree):
+% \begin{quote}
+% \def\t{^^A
+% \begin{tabular}{@{}>{\ttfamily}l@{ $\rightarrow$ }>{\ttfamily}l@{}}
+% pagegrid.sty & tex/generic/oberdiek/pagegrid.sty\\
+% pagegrid.pdf & doc/latex/oberdiek/pagegrid.pdf\\
+% test/pagegrid-test1.tex & doc/latex/oberdiek/test/pagegrid-test1.tex\\
+% pagegrid.dtx & source/latex/oberdiek/pagegrid.dtx\\
+% \end{tabular}^^A
+% }^^A
+% \sbox0{\t}^^A
+% \ifdim\wd0>\linewidth
+% \begingroup
+% \advance\linewidth by\leftmargin
+% \advance\linewidth by\rightmargin
+% \edef\x{\endgroup
+% \def\noexpand\lw{\the\linewidth}^^A
+% }\x
+% \def\lwbox{^^A
+% \leavevmode
+% \hbox to \linewidth{^^A
+% \kern-\leftmargin\relax
+% \hss
+% \usebox0
+% \hss
+% \kern-\rightmargin\relax
+% }^^A
+% }^^A
+% \ifdim\wd0>\lw
+% \sbox0{\small\t}^^A
+% \ifdim\wd0>\linewidth
+% \ifdim\wd0>\lw
+% \sbox0{\footnotesize\t}^^A
+% \ifdim\wd0>\linewidth
+% \ifdim\wd0>\lw
+% \sbox0{\scriptsize\t}^^A
+% \ifdim\wd0>\linewidth
+% \ifdim\wd0>\lw
+% \sbox0{\tiny\t}^^A
+% \ifdim\wd0>\linewidth
+% \lwbox
+% \else
+% \usebox0
+% \fi
+% \else
+% \lwbox
+% \fi
+% \else
+% \usebox0
+% \fi
+% \else
+% \lwbox
+% \fi
+% \else
+% \usebox0
+% \fi
+% \else
+% \lwbox
+% \fi
+% \else
+% \usebox0
+% \fi
+% \else
+% \lwbox
+% \fi
+% \else
+% \usebox0
+% \fi
+% \end{quote}
+% If you have a \xfile{docstrip.cfg} that configures and enables \docstrip's
+% TDS installing feature, then some files can already be in the right
+% place, see the documentation of \docstrip.
+%
+% \subsection{Refresh file name databases}
+%
+% If your \TeX~distribution
+% (\teTeX, \mikTeX, \dots) relies on file name databases, you must refresh
+% these. For example, \teTeX\ users run \verb|texhash| or
+% \verb|mktexlsr|.
+%
+% \subsection{Some details for the interested}
+%
+% \paragraph{Attached source.}
+%
+% The PDF documentation on CTAN also includes the
+% \xfile{.dtx} source file. It can be extracted by
+% AcrobatReader 6 or higher. Another option is \textsf{pdftk},
+% e.g. unpack the file into the current directory:
+% \begin{quote}
+% \verb|pdftk pagegrid.pdf unpack_files output .|
+% \end{quote}
+%
+% \paragraph{Unpacking with \LaTeX.}
+% The \xfile{.dtx} chooses its action depending on the format:
+% \begin{description}
+% \item[\plainTeX:] Run \docstrip\ and extract the files.
+% \item[\LaTeX:] Generate the documentation.
+% \end{description}
+% If you insist on using \LaTeX\ for \docstrip\ (really,
+% \docstrip\ does not need \LaTeX), then inform the autodetect routine
+% about your intention:
+% \begin{quote}
+% \verb|latex \let\install=y\input{pagegrid.dtx}|
+% \end{quote}
+% Do not forget to quote the argument according to the demands
+% of your shell.
+%
+% \paragraph{Generating the documentation.}
+% You can use both the \xfile{.dtx} or the \xfile{.drv} to generate
+% the documentation. The process can be configured by the
+% configuration file \xfile{ltxdoc.cfg}. For instance, put this
+% line into this file, if you want to have A4 as paper format:
+% \begin{quote}
+% \verb|\PassOptionsToClass{a4paper}{article}|
+% \end{quote}
+% An example follows how to generate the
+% documentation with pdf\LaTeX:
+% \begin{quote}
+%\begin{verbatim}
+%pdflatex pagegrid.dtx
+%makeindex -s gind.ist pagegrid.idx
+%pdflatex pagegrid.dtx
+%makeindex -s gind.ist pagegrid.idx
+%pdflatex pagegrid.dtx
+%\end{verbatim}
+% \end{quote}
+%
+% \section{Acknowledgement}
+%
+% \begin{description}
+% \item[Klaus Braune:]
+% He provided the idea and the first \xpackage{tikz} code.
+% \end{description}
+%
+% \begin{History}
+% \begin{Version}{2009/11/06 v1.0}
+% \item
+% The first version.
+% \end{Version}
+% \begin{Version}{2009/11/06 v1.1}
+% \item
+% Option \xoption{foreground} added.
+% \end{Version}
+% \begin{Version}{2009/12/02 v1.2}
+% \item
+% Color options, arrow options added.
+% \item
+% Names for origin options changed.
+% \end{Version}
+% \begin{Version}{2009/12/03 v1.3}
+% \item
+% Option \xoption{double} added.
+% \item
+% First CTAN release.
+% \end{Version}
+% \begin{Version}{2009/12/04 v1.4}
+% \item
+% Option \xoption{double}: Some unwanted side effects removed.
+% \end{Version}
+% \end{History}
+%
+% \PrintIndex
+%
+% \Finale
+\endinput