%%
%% This is file `showkeys.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% showkeys.dtx  (with options: `package')
%% 
%% IMPORTANT NOTICE:
%% 
%% This file is a generated file from the sources of the `tools' bundle
%% in the LaTeX2e distribution.
%% 
%% For the copyright notice see the source file(s).
%% 
%% You are not allowed to modify this file.
%% 
%% You are allowed to distribute this file if and only if
%% it is distributed with the corresponding source files in
%% the `tools' bundle.
%% 
%% For the copying and distribution conditions of the source files,
%% see the file readme.txt distributed with the tools bundle.
%% 
%% File: showkeys.dtx Copyright (C) 1992-1997 David Carlisle
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{showkeys}
          [1997/06/12 v3.12 Show cite and label keys (DPC)]
\DeclareOption{notref}{\let\SK@ref\@empty}
\DeclareOption{notcite}{\let\SK@cite\@empty}
\let\SK@refcolor\relax
\let\SK@labelcolor\relax
\DeclareOption{color}{\AtEndOfPackage{%
  \RequirePackage{color}%
  \definecolor{refkey}{gray}{.75}%
  \definecolor{labelkey}{gray}{.75}%
  \def\SK@refcolor{\color{refkey}}%
  \def\SK@labelcolor{\color{labelkey}}}}
\DeclareOption{final}{\endinput}
\DeclareOption{draft}{}
\ProcessOptions
\let\SK@label\label
\let\SK@bibitem\@bibitem
\let\SK@lbibitem\@lbibitem
\def\label#1{%
  \@bsphack
  \SK@\SK@@label{#1}%
  \begingroup
    \SK@label{#1}%
  \endgroup
  \@esphack}
\def\@bibitem#1{%
  \SK@bibitem{#1}\SK@\SK@@label{#1}\ignorespaces}
\def\@lbibitem[#1]#2{%
  \SK@lbibitem[#1]{#2}\SK@\SK@@label{#2}\ignorespaces}
\def\SK@#1#2{%
  \protected@edef\@tempa{#2}%
  \expandafter#1\meaning\@tempa\SK@}
\def\SK@@label#1>#2\SK@{%
  \gdef\SK@lab{\smash{\SK@labelcolor\fbox{%
                     \normalfont\small\ttfamily#2}}}%
  \ifvmode
    \if@inlabel
      \global\setbox\@labels\hbox{%
        \llap{\SK@lab\SK@lab@relax
              \kern\@totalleftmargin\kern\marginparsep}%
        \box\@labels}%
    \else
      \dimen@\prevdepth
      \nointerlineskip
      \ifinner
        \skip@\lastskip\unskip
        \advance\skip@\lastskip\unskip
        \setbox\z@\lastbox
        \ifvoid\z@
          \llap{\SK@lab\SK@lab@relax\kern\marginparsep}%
        \else
          \hbox{\box\z@\kern\marginparsep\SK@labx}%
        \fi
        \vskip\skip@
      \else
        \llap{\SK@lab\SK@lab@relax\kern\marginparsep}%
      \fi
      \prevdepth\dimen@
    \fi
  \else
    \csname SK@\@currenvir\endcsname
    \ifSK@equation\else
      \ifmmode
        \SK@labx
      \else
        \ifinner
          \rlap\SK@lab
      \else
          \vadjust{\llap{\SK@lab\kern\marginparsep}}%
        \fi
        \SK@lab@relax
      \fi
    \fi
  \fi}
\AtBeginDocument{%
  \let\SK@eqnnum\@eqnnum
  \def\@tempa{\let\iftagsleft@\iffalse}%
  \ifx\iftagsleft@\undefined\@tempa\fi%
  \let\SK@tagform@\tagform@
  \iftagsleft@
    \def\tagform@#1{%
      \ifx\df@label\@empty
        \SK@lab@relax
      \else
        \expandafter\SK@@label\meaning\df@label\SK@
      \fi
      \llap{\SK@lab\kern\marginparsep}%
      \SK@lab@relax\SK@tagform@{#1}}%
    \def\@eqnnum{%
      \llap{\SK@lab\kern\displaywidth\kern\marginparsep}%
      \SK@lab@relax\SK@eqnnum}%
  \else
    \def\tagform@#1{%
      \ifx\df@label\@empty
        \SK@lab@relax
      \else
        \expandafter\SK@@label\meaning\df@label\SK@
      \fi
      \SK@tagform@{#1}%
      \rlap{\kern\marginparsep\SK@lab}\SK@lab@relax}%
    \def\@eqnnum{\SK@eqnnum\rlap{\kern\marginparsep\SK@lab}%
                     \SK@lab@relax}%
  \fi}
\def\SK@labx{\rlap\SK@lab\global\let\SK@lab\relax}
\def\SK@lab@relax{\global\let\SK@lab\relax}\SK@lab@relax
\newif\ifSK@equation
\let\SK@equation\SK@equationtrue
\let\SK@eqnarray\SK@equationtrue
\toks@\expandafter{\eqnarray}
\edef\eqnarray{\let\noexpand\tagform@\noexpand\SK@tagform@\the\toks@}
\let\SK@align\SK@equationtrue
\let\SK@alignat\SK@equationtrue
\let\SK@xalignat\SK@equationtrue
\let\SK@xxalignat\SK@equationtrue
\let\SK@gather\SK@equationtrue
\let\SK@multline\SK@equationtrue
\let\SK@flalign\SK@equationtrue
\def\SK@def#1{%
  \edef\@tempa{\expandafter\@gobble\string#1}%
  \@ifundefined{\@tempa\space}%
    {\expandafter\let\csname SK@\@tempa\endcsname#1}%
    {\expandafter\let\csname SK@\@tempa\expandafter\endcsname
                         \csname\@tempa\space\endcsname}%
  \expandafter\def\expandafter#1\expandafter{%
        \expandafter\protect\csname\@tempa\space\endcsname}%
  \expandafter\def\csname\@tempa\space\endcsname}
\ifx\SK@ref\@empty
\AtBeginDocument{%
  \ifx\vpageref\@undefined\else
    \SK@def\@@vpageref#1[#2]#3{{%
      \let\label\SK@label
      \SK@@@vpageref#1[#2]{#3}}}%
    \DeclareRobustCommand\vref[1]{%
      \unskip~\ref{#1}%
      {\let\label\SK@label
       \SK@@@vpageref\unskip[\unskip\space]{#1}}}%
  \fi}
\else
\AtBeginDocument{%
  \SK@def\ref#1{\SK@\SK@@ref{#1}\SK@ref{#1}}%
  \SK@def\pageref#1{\SK@\SK@@ref{#1}\SK@pageref{#1}}%
  \ifx\vpageref\@undefined\else
    \SK@def\@@vpageref#1[#2]#3{{%
      \let\label\SK@label\let\ref\SK@ref\let\pageref\SK@pageref
      \leavevmode\unskip\SK@\SK@@ref{#3}\SK@@@vpageref#1[#2]{#3}}}%
    \DeclareRobustCommand\vref[1]{%
      \unskip~\ref{#1}%
      {\let\label\SK@label\let\ref\SK@ref\let\pageref\SK@pageref
       \SK@@@vpageref\unskip[\unskip\space]{#1}}}%
  \fi}
\fi
\ifx\SK@cite\@empty
\AtBeginDocument{%
  \ifx\HAR@checkdef\@undefined\else
      \expandafter\let\expandafter
         \SK@HAR@bi\csname\string\harvarditem\endcsname
      \expandafter\def\csname\string\harvarditem\endcsname[#1]#2#3#4{%
        \SK@HAR@bi[#1]{#2}{#3}{#4}\SK@\SK@@label{#4}}%
  \fi}
\else
\AtBeginDocument{%
  \ifx\HAR@checkdef\@undefined
    \ifx\citen\@undefined
      \SK@def\cite#1#{\SK@citea{#1}}%
    \else
      \SK@def\citen#1{\SK@\SK@@ref{#1}\SK@citen{#1}}%
    \fi
    \SK@def\citeauthor#1{\SK@\SK@@ref{#1}\SK@citeauthor{#1}}%
    \SK@def\citefullauthor#1{\SK@\SK@@ref{#1}\SK@citefullauthor{#1}}%
    \SK@def\citeyear#1{\SK@\SK@@ref{#1}\SK@citeyear{#1}}%
  \else
    \SK@def\HAR@checkdef#1#2{%
      \expandafter\SK@\expandafter\SK@@ref\expandafter{#1}%
      \SK@HAR@checkdef{#1}{#2}}%
      \expandafter\let\expandafter
         \SK@HAR@bi\csname\string\harvarditem\endcsname
      \expandafter\def\csname\string\harvarditem\endcsname[#1]#2#3#4{%
        \SK@HAR@bi[#1]{#2}{#3}{#4}\SK@\SK@@label{#4}}%
  \fi}
\def\SK@citea#1#2{%
  \SK@\SK@@ref{#2}\SK@cite#1{#2}}
\fi
\def\SK@@ref#1>#2\SK@{%
  \leavevmode\vbox to\z@{%
    \vss
    \SK@refcolor
    \rlap{\vrule\raise .75em%
       \hbox{\underbar{\normalfont\footnotesize\ttfamily#2}}}}}
\endinput
%%
%% End of file `showkeys.sty'.