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% Rolf Niepraschk -- Rolf.Niepraschk@ptb.de
% Draws visible frames for the text and margin area, and lines
% for the head and foot to check layout in detail. Using the package
% option "noframe" you can draw the frames later only for a single
% page with \AddToShipoutPicture*{\ShowFramePicture}. Another useful
% options maybe eso-pic's "colorgrid", "grid" and "texcoord".
\ProvidesPackage{showframe}[2005/12/18 v0.1g showframe (new impl., RN)]
\newif\ifSF@frame\SF@frametrue
\DeclareOption{noframe}{\SF@framefalse}
\DeclareOption*{\PassOptionsToPackage{\CurrentOption}{eso-pic}}
\ProcessOptions\relax
\RequirePackage{eso-pic}[2002/10/30]
\newcommand\ShowFramePicture{%
\begingroup
\normalcolor\thicklines%
\AtTextLowerLeft{%
\framebox(\LenToUnit{\textwidth},\LenToUnit{\textheight}){}}%
\AtTextUpperLeft{%
\put(0,\LenToUnit{\headsep}){%
\framebox(\LenToUnit{\textwidth},\LenToUnit{\headheight}){}}}%
\AtTextLowerLeft{%
\put(0,\LenToUnit{-\footskip}){%
\line(1,0){\LenToUnit{\textwidth}}}}%
\AtTextLowerLeft{%
\@tempdima=\textwidth\advance\@tempdima\marginparsep%
\if@twoside%
\ifodd\c@page\else%
\if@mparswitch
\@tempdima=-\marginparsep\advance\@tempdima-\marginparwidth%
\fi
\fi%
\fi%
\put(\LenToUnit{\@tempdima},0)%
{\framebox(\LenToUnit{\marginparwidth},\LenToUnit{\textheight}){}}%
}%
\endgroup
}
\ifSF@frame\AddToShipoutPicture{\ShowFramePicture}\fi
\endinput
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