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@@ -0,0 +1,460 @@
+%%
+%% This is file `rkeyval.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% rkeyval.dtx 
+%% 
+%%% ====================================================================
+%%% @LaTeX-doc-source-file{
+%%%   filename  = "rkeyval.dtx",
+%%%   version   = "2.00",
+%%%   date      = "2004/06/28",
+%%%   time      = "15:19:29 EDT",
+%%%   author    = "Michael J Downes and David M. Jones",
+%%%   address   = "American Mathematical Society,
+%%%                Publications Technical Group,
+%%%                PO Box 6248,
+%%%                Providence, RI 02940,
+%%%                USA",
+%%%   email     = "tech-support@ams.org",
+%%%   URL       = "http://www.ams.org/",
+%%%   abstract  = "Key-value scanning functions with more restrictive
+%%%                syntax than the standard keyval package. This permits
+%%%                some improvements in the error-checking.",
+%%%   copyright = "Copyright 2001 American Mathematical Society.",
+%%%   license   = "Unlimited copying and redistribution of this file
+%%%                are permitted as long as this file is not
+%%%                modified.  Modifications, and distribution of
+%%%                modified versions, are permitted, but only if
+%%%                the resulting file is renamed.",
+%%%   checksum  = "44721 1116 3178 30537",
+%%%   docstring = "The checksum field, produced by Robert Solovay's
+%%%                checksum utility, gives CRC-16 checksum, lines,
+%%%                words, and characters.",
+%%%  }
+%%% ====================================================================
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{rkeyval}[2004/05/05 v1.08]
+\let\@xp\expandafter
+\let\@nx\noexpand
+\long\def\@gobblethree#1#2#3{}
+\long\def\@nilgobble#1\@nil{}
+\@ifundefined{@emptytoks}{\csname newtoks\endcsname\@emptytoks}{}
+\@ifundefined{@temptokenb}{\csname newtoks\endcsname\@temptokenb}{}
+\def\@append#1#2#3{\@xp\def\@xp#2\@xp{#2#1{#3}}}
+\def\star@#1#2{%
+    \def\star@a##1{#1}%
+    \def\star@b{#1{#2}}%
+    \futurelet\@let@token\star@test
+}
+
+\def\star@test{\ifx*\@let@token \let\star@b\star@a\fi \star@b}
+\@ifundefined{NormalCatcodes}{\RequirePackage{pcatcode}\relax}{}
+\PushCatcodes\NormalCatcodes
+\def\extract@group#1{%
+    \@xp\extract@group@a\string#1\@nil
+}
+\def\extract@group@a#1#2'{#2\@nilgobble}
+\def\set@property#1{%
+    \begingroup
+        \edef\@tempa{\extract@group#1}%
+        \edef\@tempa{%
+            \@nx\@append\@nx#1\@xp\@nx\csname \@tempa,aux\endcsname
+        }%
+    \@xp\endgroup
+    \@tempa
+}
+\def\get@property#1#2{%
+    \get@nth@property#1#2\m@ne
+}
+\def\get@nth@property#1#2#3{%
+    \begingroup
+        \edef\@tempa{\extract@group#2}%
+        \@tempcnta#3\relax
+        \@tempcntb\z@
+        \@xp\scan@properties\@xp#2\csname \@tempa,aux\endcsname
+        \edef\@tempa{\def\@nx#1{\@tempa}}%
+    \@xp\endgroup
+    \@tempa
+}
+\def\scan@properties#1#2{%
+    \begingroup
+        \def\@tempa{#1}%
+        \let\@tempc\@empty
+        \@xp\find@property #2 \@nil\@nil
+        \edef\@tempa{\def\@nx\@tempa{\@tempc}}%
+    \@xp\endgroup
+    \@tempa
+}
+\def\find@property#1#2{%
+    \ifx\@nil#1%
+    \else
+        \def\@tempb{#1}%
+        \ifx\@tempa\@tempb
+            \ifnum\@tempcnta<\z@
+                \def\@tempc{#2}%
+            \else
+                \advance\@tempcntb\@ne
+                \ifnum\@tempcntb=\@tempcnta
+                    \def\@tempc{#2}%
+                \fi
+            \fi
+        \fi
+        \@xp\find@property
+    \fi
+}
+\def\reset@property#1#2{%
+    \reset@nth@property#1\m@ne{#2}%
+}
+\def\reset@nth@property#1#2#3{%
+    \begingroup
+        \edef\@tempa{\extract@group#1}%
+        \@tempcnta#2\relax
+        \@temptokena{#3}%
+        \toks@\@emptytoks
+        \@tempcntb\z@
+        \@xp\reset@scan\@xp#1\csname \@tempa,aux\endcsname
+        \edef\@tempa{%
+            \def\@xp\@nx\csname \@tempa,aux\endcsname{\the\toks@}%
+        }%
+    \@xp\endgroup
+    \@tempa
+}
+\def\reset@scan#1#2{%
+    \begingroup
+        \def\@tempa{#1}%
+        \@xp\reset@scan@a #2 \@nil\@nil
+        \edef\@tempa{\toks@{\the\toks@}}%
+    \@xp\endgroup
+    \@tempa
+}
+\def\reset@scan@a#1#2{%
+    \ifx\@nil#1%
+    \else
+        \def\@tempb{#1}%
+        \ifx\@tempa\@tempb
+            \ifnum\@tempcnta<\z@
+                \@temptokenb\@temptokena
+            \else
+                \advance\@tempcntb\@ne
+                \ifnum\@tempcntb=\@tempcnta
+                    \@temptokenb\@temptokena
+                \fi
+            \fi
+        \else
+            \@temptokenb{#2}%
+        \fi
+        \edef\@tempb{%
+            \toks@{\the\toks@ \@nx#1{\the\@temptokenb}}%
+        }%
+        \@tempb
+        \@xp\reset@scan@a
+    \fi
+}
+\def\fsa@l{\futurelet\@let@token\fsa@t}
+\def\fsa@b{\afterassignment\fsa@l \let\@let@token= }
+\def\fsa@c#1{\aftergroup#1\fsa@l}
+\let\fsa@n\@empty
+\let\fsa@t\@empty
+\newtoks\rsk@toks
+\def\rkvIfEmpty#1#2{%
+    \@xp\ifx\csname#1'#2\endcsname\@empty
+        \@xp\@firstoftwo
+    \else
+        \@xp\@secondoftwo
+    \fi
+}
+\def\rkvIfAdditive#1{%
+    \@xp\let\@xp\@let@token \csname \rkv@setter#1\endcsname
+    \afterassignment\@nilgobble
+    \@xp\let\@xp\@let@token \@let@token \@empty\@empty\@nil
+    \ifx\@let@token\DSK@append
+        \@xp\@firstoftwo
+    \else
+        \@xp\@secondoftwo
+    \fi
+}
+\def\rkv@setter#1{set:\@xp\@gobble\string#1}
+\def\rkv@DSAK#1#2{%
+    \addto@group@reset#1{\let#1\@empty}%
+    \edef\@tempa{\def\csname \rkv@setter#1\endcsname}%
+    \@tempa{#2#1}%
+}
+\def\rkv@DDK#1{%
+    \addto@group@reset#1{\def#1{\@empty}}%
+    \@xp\let\csname \rkv@setter#1\endcsname\@gobble
+}
+\def\DSK@def#1{%
+    \ifx#1\@empty\else
+        \PackageWarningNoLine{rkeyval}%
+            {Key \string#1 should not be repeated}%
+    \fi
+    \DSK@redef#1%
+}
+\def\DSK@redef#1#2{%
+    \@ifempty{#2}{\@gobble}{%
+        \def#1{#2}%
+        \set@property#1
+    }%
+}
+\def\init@group@reset#1{%
+    \begingroup
+        \edef\@tempb{\@xp\@nx\csname #1@reset\endcsname}%
+        \@xp\ifx\@tempb\relax
+            \@xp\xdef\@tempb{\let \csname #1,aux\endcsname\@nx\@empty}
+        \fi
+    \endgroup
+}
+\def\addto@group@reset#1{%
+    \begingroup
+        \edef\@tempa{\extract@group#1}%
+        \init@group@reset\@tempa
+        \edef\@tempa{%
+            \@nx\g@addto@macro\@xp\@nx\csname\@tempa @reset\endcsname
+        }%
+    \@xp\endgroup
+    \@tempa
+}
+\newcommand{\DefineSimpleKey}[2]{%
+    \@xp\rkv@DSAK
+        \csname #1'#2\endcsname
+        {\DSK@def}%
+}
+\newcommand{\DefineSupersedingKey}[2]{%
+    \@xp\rkv@DSAK
+        \csname #1'#2\endcsname
+        {\DSK@redef}%
+}
+\newcommand{\DefineAdditiveKey}[3]{%
+    \@xp\rkv@DSAK
+        \csname #1'#2\endcsname
+        {\DSK@append#3}%
+}
+\def\DSK@append#1#2#3{%
+    \@ifempty{#3}{\@gobble}{%
+        \@append#1#2{#3}%
+        \set@property#2
+    }%
+}
+\newcommand{\DefineDummyKey}[2]{%
+    \@xp\rkv@DDK \csname #1'#2\endcsname
+}
+\newcommand{\RestrictedSetKeys}[3]{%
+    \global\rsk@toks\@xp{\csname #2@reset\endcsname}%
+    \def\rsk@finish{#3}%
+    \gdef\rsk@set{\@xp\rsk@set@a\csname#2'}%
+    #1\relax
+    \begingroup
+        \rsk@changecase
+        \aftergroup\rsk@set
+        \let\fsa@t\rsk@z
+        \fsa@l
+}
+\def\rsk@unknown@key#1{%
+    \PackageWarning{rkeyval}{Unknown key: \string#1}%
+    \@xp\def\csname\rkv@setter#1\endcsname {\DSK@redef#1}%
+}
+\def\rsk@z{%
+    \ifx\bgroup\@let@token
+        \let\fsa@t\rsk@b
+        \let\fsa@n\fsa@b
+    \else
+        \ifx\@sptoken\@let@token
+            \let\fsa@n\fsa@b
+        \else
+            \rsk@errf
+        \fi
+    \fi
+    \fsa@n
+}
+\def\rsk@a{%
+    \ifx\@let@token\@sptoken
+        \let\fsa@n\fsa@b
+    \else
+        \ifx\@let@token\par
+            \let\fsa@n\fsa@b
+        \else
+            \ifx,\@let@token
+                \endgroup
+                \let\fsa@t\rsk@b
+                \let\fsa@n\fsa@b
+            \else
+                \ifx\egroup\@let@token
+                    \endgroup
+                    \let\fsa@n\rsk@end
+                \else
+                    \endgroup
+                    \let\fsa@n\rsk@erraa
+                \fi
+            \fi
+        \fi
+    \fi
+    \fsa@n
+}
+\def\rsk@b{%
+    \ifcat\@nx\@let@token A%
+        \let\fsa@t\rsk@c
+        \let\fsa@n\fsa@c
+    \else
+        \ifx\@sptoken\@let@token
+            \let\fsa@n\fsa@b
+        \else
+            \rsk@bb
+        \fi
+    \fi
+    \fsa@n
+}
+\def\rsk@bb{%
+    \ifx,\@let@token
+        \let\fsa@n\fsa@b
+    \else
+        \ifx\bgroup\@let@token
+            \let\fsa@n\rsk@errb
+        \else
+            \ifx\egroup\@let@token
+                \let\fsa@n\rsk@end
+            \else
+                \ifx\par\@let@token
+                    \let\fsa@n\fsa@b
+                \else
+                    \let\fsa@n\rsk@errc
+                \fi
+            \fi
+        \fi
+    \fi
+}
+\def\rsk@c{%
+    \ifcat\@nx\@let@token A%
+        \let\fsa@n\fsa@c
+    \else
+        \ifx\@sptoken\@let@token
+            \let\fsa@t\rsk@d
+            \let\fsa@n\fsa@b
+        \else
+            \ifx=\@let@token
+                \let\saw@equal T%
+                \let\fsa@t\rsk@d
+                \let\fsa@n\fsa@b
+            \else
+                \rsk@cb
+            \fi
+        \fi
+    \fi
+    \fsa@n
+}
+\def\rsk@cb{%
+    \ifx,\@let@token
+        \let\fsa@n\rsk@errc
+    \else
+        \ifcat\@nx\@let@token .%
+            \let\fsa@n\fsa@c
+        \else
+            \ifx\bgroup\@let@token
+                \let\fsa@n\rsk@noequal
+            \else
+                \ifx\egroup\@let@token
+                    \let\fsa@n\rsk@noequal
+                \else
+                    \let\fsa@n\rsk@errc
+                \fi
+            \fi
+        \fi
+    \fi
+}
+\let\saw@equal=F
+\def\rsk@d{%
+    \ifx\bgroup\@let@token
+        \ifx\saw@equal T%
+            \aftergroup\endcsname
+            \rsk@endcase
+            \let\fsa@n\endgroup
+        \else
+            \let\saw@equal T%
+            \let\fsa@n\rsk@noequal
+        \fi
+    \else
+        \ifx\@sptoken\@let@token
+            \let\fsa@n\fsa@b
+        \else
+            \ifx=\@let@token
+                \let\saw@equal T%
+                \let\fsa@n\fsa@b
+            \else
+                \let\fsa@n\rsk@erre
+            \fi
+        \fi
+    \fi
+    \fsa@n
+}
+\def\rsk@casesensitive{%
+    \let\rsk@changecase\@empty
+    \let\rsk@endcase\@empty
+}
+\def\rsk@startlc{\aftergroup\lowercase\aftergroup{\iffalse}\fi}
+\def\rsk@endlc{\iffalse{\fi\aftergroup}}
+\def\rsk@lowercase{%
+    \let\rsk@changecase\rsk@startlc
+    \let\rsk@endcase\rsk@endlc
+}
+\rsk@lowercase
+\def\rsk@resume{%
+    \begingroup
+        \rsk@changecase
+        \aftergroup\rsk@set
+        \let\fsa@t\rsk@a
+        \begingroup
+            \catcode\endlinechar=\active
+            \lccode`\~=\endlinechar
+            \lowercase{\let~\par}%
+            \fsa@l
+}
+\def\rsk@set@a#1#2{%
+    \star@{\rsk@set@b#1{#2}}{}%
+}
+\def\rsk@set@b#1#2#3{%
+    \@xp\ifx \csname\rkv@setter#1\endcsname \relax
+        \rsk@unknown@key#1%
+    \fi
+    \edef\@tempa{\@xp\@nx\csname \rkv@setter#1\endcsname}%
+    \toks@\@xp{\@tempa{#2}{#3}}%
+    \edef\@tempa{%
+        \global\rsk@toks{\the\rsk@toks \the\toks@}%
+    }%
+    \@tempa
+    \rsk@resume
+}
+\def\rsk@end{%
+        \global\let\rsk@set\rsk@terminate
+        \rsk@endcase
+    \endgroup
+    \endcsname
+    \afterassignment\rsk@finish
+    \toks@\bgroup
+}
+\def\rsk@terminate{\@xp\@gobble\csname}
+\def\NoCommaWarning{\PackageWarning{rkeyval}{Missing comma}}%
+%%  %    \begin{macro}{\NoCommaError}
+%%  %    \begin{macrocode}
+%%  \def\NoCommaError{\rsk@err{Missing comma}\@ehc}
+%%  %    \end{macrocode}
+%%  %    \end{macro}
+\def\rsk@nocomma{\NoCommaWarning}
+\def\rsk@err{\PackageError{rkeyval}}
+\def\rsk@errf{\rsk@err{Missing open brace}\@ehc\rsk@b}
+\long\def\rsk@erraa{\rsk@nocomma \let\fsa@t\rsk@b \fsa@l}
+\def\rsk@errb{\rsk@err{Missing key name}\@ehc\rsk@d}
+\def\rsk@errc{\rsk@err{Invalid key name character}\@ehc\fsa@b}
+\def\rsk@noequal{\rsk@err{Missing equal sign}\@ehc\rsk@d}
+\def\rsk@erre#1,{%
+        \rsk@err{Missing open brace for key value}\@ehc
+        \iffalse{\fi
+    \endgroup
+    \endcsname
+    \rsk@endcase }{#1},%
+}
+\PopCatcodes
+\endinput
+%%
+%% End of file `rkeyval.sty'.