%% This is file `docstrip.tex', generated 
%% on <1995/1/27> with the docstrip utility (2.2i).
%% The original source files were:
%% docstrip.dtx  (with options: `program,stats')
%% Copyright 1994 the LaTeX3 project and the individual authors. 
%% All rights reserved. For further copyright information see the file 
%% legal.txt, and any other copyright indicated in this file. 
%% This file is part of the LaTeX2e system. 
%% ---------------------------------------- 
%% This system is distributed in the hope that it will be useful, 
%% but WITHOUT ANY WARRANTY; without even the implied warranty of 
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
%% IMPORTANT NOTICE: 
%% For error reports in case of UNCHANGED versions see bugs.txt. 
%% Please do not request updates from us directly. Distribution is 
%% done through Mail-Servers and TeX organizations. 
%% You are not allowed to change this file. 
%% You are allowed to distribute this file under the condition that 
%% it is distributed together with all files mentioned in manifest.txt. 
%% If you receive only some of these files from someone, complain! 
%% You are NOT ALLOWED to distribute this file alone. You are NOT 
%% ALLOWED to take money for the distribution or use of either this 
%% file or a changed version, except for a nominal charge for copying 
%% etc. 
%% Definition of \@currdir inserted by docstrip
\catcode `\@ =11
\def \@currdir{./}
\def\filename{docstrip.dtx}
\def\fileversion{2.2i}
\def\filedate{1994/12/15}
\def\docdate {1994/06/09}
%% \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         \~}
%% The docstrip program for use with TeX.
%% Copyright (C) 1989-1991 Frank Mittelbach
%% Copyright (C) 1992-1994 Johannes Braams, Denys Duchier,
%%                         Frank Mittelbach
%% All rights are reserved.
\catcode`\@=11
\newlinechar=`\^^J
\newtoks\TerminalString
\newif\ifOff
\newif\ifGenerate
\newif\ifContinue
\newif\ifTerminal
\newif\ifForlist
\newif\ifDefault
\newif\ifMoreFiles \MoreFilestrue
\newcount\blockLevel \blockLevel\z@
\newcount\offLevel \offLevel \z@
\newcount\emptyLines \emptyLines \z@
\newcount\processedLines   \processedLines  \z@
\newcount\commentsRemoved  \commentsRemoved \z@
\newcount\commentsPassed   \commentsPassed  \z@
\newcount\codeLinesPassed  \codeLinesPassed \z@
\newcount\NumberOfFiles \NumberOfFiles\z@
\newcount\TotalprocessedLines   \TotalprocessedLines  \z@
\newcount\TotalcommentsRemoved  \TotalcommentsRemoved \z@
\newcount\TotalcommentsPassed   \TotalcommentsPassed  \z@
\newcount\TotalcodeLinesPassed  \TotalcodeLinesPassed \z@
\newread\inFile
\newwrite\outFile
\newread\ttyin
\newwrite\ttyout
\newread\@tempa
\let\lowestbatchFile\@tempa
\newread\@tempa \newread\@tempa \newread\@tempa \newread\@tempa
\newread\@tempa \newread\@tempa \newread\@tempa \newread\@tempa
\newread\@tempa
\let\highestbatchFile\@tempa
\newcount\currbatchFile
\currbatchFile=\highestbatchFile
\advance\currbatchFile by -9
\def\ifToplevel{\relax\ifnum\currbatchFile=\lowestbatchFile
   \expandafter\iden \else \expandafter\gobble\fi}
\ifx\undefined\@@input \let\@@input\input\fi
\def\batchinput#1{%
   \begingroup
     \def\batchfile{#1}%
     \advance\currbatchFile\@ne
     \ifnum\currbatchFile>\highestbatchFile
        \errhelp{Only up to ten levels of nesting for
                 \noexpand\batchinput commands are supported}%
        \errmessage{Batchfiles too deeply nested}%
     \fi
     \processbatchFile
   \endgroup
\def\skip@input#1 {}
\let\input\skip@input
\def\guardStack{}
\def\blockHead{}
\def\Options{}
\def\lastOption{}
\def\TrueExpression{TT}
\def\FalseExpression{TF}
\def\yes{yes}
\def\y{y}
\def\n{n}
\def\DefaultbatchFile{docstrip.cmd}
{\catcode`\%=12
 \gdef\perCent{%}
 \gdef\DoubleperCent{%% }
\def^^L{ }
\def\eltStart{}
\def\eltEnd{}
\def\qStop{\qStop}
\def\pop#1#2{%
  \ifx#1\empty
    \Msg{Warning: Found end guard without matching begin}%
    \let#2\empty
  \else
    \def\tmp{\expandafter\popX #1\qStop #1#2}%
    \expandafter\tmp\fi}
\def\popX\eltStart #1\eltEnd #2\qStop #3#4{\def#3{#2}\def#4{#1}}
\def\push#1#2{\expandafter\pushX #1\qStop #1{\eltStart #2\eltEnd}}
\def\pushX #1\qStop #2#3{\def #2{#3#1}}
\def\forlist#1:=#2\do#3\od{%
    \edef\ListCondition{#2}%
    \Forlisttrue
    \loop
      \edef#1{\expandafter\FirstElt\ListCondition,\empty.}%
      \edef\ListCondition{\expandafter\OtherElts\ListCondition,\empty.}%
      \ifx#1\empty \Forlistfalse \else#3\fi
      \ifForlist
    \repeat}
\def\FirstElt#1,#2.{#1}
\def\OtherElts#1,#2.{#2}
\def\whileswitch#1\fi#2{#1\loop#2#1\repeat\fi}
\def\showprogress{\let\maybeMsg\message}
\def\keepsilent{\let\maybeMsg\gobble}
\showprogress
\def\Msg{\immediate\write\ttyout}
\def\iden#1{#1}
\def\strip#1#2 \gobble{\def #1{#2}}
\def\@defpar{\par}
\def\Ask#1#2{%
    \message{#2}\read\ttyin to #1\ifx#1\@defpar\def#1{}\else
    \iden{\expandafter\strip\expandafter#1#1\gobble\gobble} \gobble\fi}
\def\WriteOut#1{\maybeMsg{.}\immediate\write\outFile{#1}}
\def\OffStart{\Offtrue\advance\offLevel\@ne}
\def\OffEnd{%
    \advance\offLevel\m@ne
    \ifnum\offLevel=\z@
      \Offfalse
    \fi}
\def\gobble#1{}
\edef\Endinput{\expandafter\gobble\string\\endinput}
\def\makeOther#1{\catcode`#1=12\relax}
\ifx\undefined\@@end\else\let\end\@@end\fi
\def\PropagateValue#1\qStop{%
  \edef\ExpressionValue{#1}}
\def\ContinueExpression#1{%
  \if\ExpressionValue
  \else
    \def\ExpressionValue{#1}%
  \fi
  \futurelet\nextToken\ContinueExpressionX}
\def\ContinueExpressionX{%
  \ifx|\nextToken
    \def\doNext|{\Primary}%
  \else
    \ifx,\nextToken
      \def\doNext,{\Primary}%
    \else
      \edef\doNext){\endgroup\noexpand\PropagateValue{\ExpressionValue}}
    \fi
  \fi
  \doNext}
\def\ContinuePrimary#1{%
  \if\ExpressionValue
    \def\ExpressionValue{#1}%
  \fi
  \futurelet\nextToken\ContinuePrimaryX}
{\catcode`\&=12
\gdef\ContinuePrimaryX{%
  \ifx&\nextToken
    \def\doNext&{\Secondary}%
  \else
    \edef\doNext{\endgroup\noexpand\PropagateValue{\ExpressionValue}}%
  \fi
  \doNext}}
\def\PropagateNegatedValue#1{%
  \edef\doNext{\endgroup
    \noexpand\PropagateValue
    {\if#1%
       \noexpand\FalseExpression
     \else
       \noexpand\TrueExpression
     \fi}}%
  \doNext}
\def\Evaluate#1{%
  \Expression(#1)\qStop}
\def\Expression({%
  \begingroup
    \let\ExpressionValue\FalseExpression
    \let\PropagateValue\ContinueExpression
    \Primary}
\def\Primary{%
  \begingroup
    \let\ExpressionValue\TrueExpression
    \let\PropagateValue\ContinuePrimary
    \Secondary}
\def\Secondary{%
  \futurelet\nextToken\SecondaryX}
\def\SecondaryX{%
  \ifx\nextToken(\let\doNext\Expression\else
  \ifx\nextToken!\let\doNext\Negate\else
                 \let\doNext\Terminal\fi\fi
  \doNext}
\def\Negate!{%
  \begingroup
    \let\PropagateValue\PropagateNegatedValue
    \Secondary}
\def\Terminal{%
  \global\TerminalString{}\TerminalX}
\def\TerminalX#1{%
  \global\TerminalString\expandafter{\the\TerminalString#1}%
  \futurelet\nextToken\TerminalXX}
{\catcode`\&=12
\gdef\TerminalXX{%
  \Terminalfalse
  \ifx &\nextToken \else
  \ifx |\nextToken \else
  \ifx ,\nextToken \else
  \ifx !\nextToken \else
  \ifx (\nextToken \else
  \ifx )\nextToken \else
    \Terminaltrue
  \fi\fi\fi\fi\fi\fi
  \ifTerminal
    \let\doNext\TerminalX
  \else
    \edef\doNext{\noexpand\SetValue{\the\TerminalString}}%
    \global\TerminalString{}%
  \fi
  \doNext}
\def\SetValue#1{%
  \def\tmp##1,#1,##2\qStop{%
    \def\tmp{##2}%
    \edef\doNext{\noexpand\PropagateValue
      {\ifx\tmp\empty\FalseExpression\else\TrueExpression\fi}}%
    \doNext}%
  \expandafter\tmp\expandafter,\Options,#1,\qStop}
\def\copyLine#1\endLine{%
  \advance\codeLinesPassed\@ne
  \WriteOut{#1}}
\def\removeLine#1\endLine{%
    \maybeMsg{\perCent}}
\def\removeComment#1\endLine{%
    \advance\commentsRemoved\@ne
    \maybeMsg{\perCent}}
\def\putMetaComment#1\endLine{%
  \closeOption%
  \advance\commentsPassed\@ne
  \WriteOut{\inLine}}
\def\processLine{%
  \advance\processedLines\@ne
  \futurelet\nextToken\processLineX}
\begingroup
\catcode`\%=12 \catcode`\#=14
\gdef\processLineX{#
  \ifx%\nextToken
    \let\doNext\processLineXX
  \else
    \closeOption
    \ifOff
      \let\doNext\removeLine
    \else
      \let\doNext\copyLine
    \fi
  \fi
  \doNext}
\endgroup
\def\processLineXX#1{%
  \futurelet\nextToken\processLineXXX}
\begingroup
\catcode`\%=12 \catcode`\#=14
\gdef\processLineXXX{#
  \ifx%\nextToken \let\doNext\putMetaComment \else
  \ifx<\nextToken \let\doNext\checkOption    \else
             \closeOption
             \let\doNext\removeComment  \fi\fi
  \doNext}
\endgroup
\def\checkOption<{%
  \futurelet\nextToken\checkOptionsX}
\def\checkOptionsX{%
  \ifx*\nextToken \let\doNext\starOption  \else
  \ifx/\nextToken \let\doNext\slashOption \else
  \ifOff          \let\doNext\removeLine  \else
  \ifx+\nextToken \let\doNext\plusOption  \else
  \ifx-\nextToken \let\doNext\minusOption \else
                  \let\doNext\doOption    \fi\fi\fi\fi\fi
  \doNext}
\def\closeOption{%
  \ifx\lastOption\empty\else
    \maybeMsg{>}\let\lastOption\empty\fi}
\def\doOption#1>{%
  \testOption{}{#1}%
  \if\ExpressionValue \expandafter\copyLine
  \else         \expandafter\removeLine \fi}
\def\plusOption+#1>{%
  \testOption+{#1}%
  \if\ExpressionValue \expandafter\copyLine
  \else         \expandafter\removeLine \fi}
\def\minusOption-#1>{%
  \testOption-{#1}%
  \if\ExpressionValue \expandafter\removeLine
  \else         \expandafter\copyLine \fi}
\def\starOption*#1>{%
  \closeOption
  \maybeMsg{<*#1}%
  \expandafter\push\expandafter\guardStack\expandafter{\blockHead}%
  \advance\blockLevel\@ne
  \def\blockHead{#1}%
  \ifOff
    \advance\offLevel\@ne
  \else
    \Evaluate{#1}%
    \if\ExpressionValue\else\OffStart\fi
  \fi
  \removeLine}
\def\slashOption/#1>{%
  \def\tmp{#1}%
  \ifnum\blockLevel<\@ne
    \errmessage{Spurious end block </\tmp> ignored}%
  \else
    \ifx\tmp\blockHead
      \pop\guardStack\blockHead
    \else
      \errmessage{Found </\tmp> instead of <*\blockHead>}%
    \fi
    \maybeMsg{>}%
    \advance\blockLevel\m@ne
    \ifOff\OffEnd\fi
  \fi
  \removeLine}
\def\testOption#1#2{%
  \def\tmp{#2}%
  \ifx\tmp\empty
    \errmessage{Missing option expression!}%
    \def\tmp{MISSING OPTION}%
  \else
    \def\tmp{<#1#2}%
  \fi
  \ifx\tmp\lastOption
  \else
    \closeOption
    \let\lastOption\tmp
    \maybeMsg{\lastOption}%
    \Evaluate{#2}%
  \fi}
\def\generateFile#1#2#3{{%
  \Msg{^^JGenerating file \WriteToDir#1^^J}%
  \Generatetrue
  \def\tmp{#2}\def\t{t}%
  \ifx\tmp\t
    \immediate\openin\inFile\WriteToDir#1\relax
    \ifeof\inFile\else
      \Ask\answer{File \WriteToDir#1 already exists
                  \ifx\@empty\WriteToDir somewhere \fi
                  on the system.^^J%
                  Overwrite it%
                  \ifx\@empty\WriteToDir\space if necessary\fi
                  ? [y/n]}%
      \ifx\y  \answer \Generatetrue \else
      \ifx\yes\answer \Generatetrue \else
                      \Generatefalse\fi\fi\fi
    \immediate\closein\inFile
  \fi
  \ifGenerate
    \def\outFileName{#1}%
    \def\from##1##2{\WriteOut{\DoubleperCent ##1 \if>##2>\else
                              \space (with options: `##2')\fi}}%
    \edef\ReferenceLines{%
        \WriteOut{\DoubleperCent ^^J%
                  \DoubleperCent The original source files were:^^J%
                  \DoubleperCent }%
        #3}%
    \def\from##1##2{\edef\inFileName{\inFileName##1\space}}
    \def\inFileName{}#3
    \def\from##1##2{\def\inFileName{##1}%
                    \edef\Options{##2}%
                    \generateFileX}%
    \immediate\openout\outFile\WriteToDir#1\relax
    \WritePreamble
    #3%
    \WritePostamble
    \immediate\closeout\outFile
    \let\ReferenceLines\OriginalRefs
  \else
    \Msg{Not generating file #1^^J}%
  \fi}}
\ifx\@currdir\@undefined
  \def\WriteToDir{}
\else
  \let\WriteToDir\@currdir
\def\include#1{\def\Options{#1}}
\def\processFile#1#2#3#4{%
  \generateFile{#1.#3}{#4}{\from{#1.#2}{\Options}}}
\def\processfile{\Msg{%
    ^^Jplease use \string\processFile\space instead of
       \string\processfile!^^J}%
    \processFile}
\def\generatefile{\Msg{%
    ^^Jplease use \string\generateFile\space instead of
      \string\generatefile!^^J}%
    \generateFile}
\def\generateFileX{{%
  \Msg{Processing File \inFileName
       \ifx\Options\empty\else\space(\Options)\fi
       \space -> \outFileName^^J}%
  \immediate\openin\inFile\inFileName\relax
  \ifeof\inFile
    \errmessage{Cannot find file \inFileName}%
  \else
    \makeOther\ \makeOther\\\makeOther\$%
    \makeOther\#\makeOther\^\makeOther\^^K%
    \makeOther\_\makeOther\^^A\makeOther\%%
    \makeOther\~\makeOther\{\makeOther\}\makeOther\&%
    \endlinechar-1\relax
    \loop
      \read\inFile to\inLine
      \ifx\inLine\Endinput
        \Msg{File \inFileName\space ended by \string\endinput.}%
        \Continuefalse
      \else
       \ifeof\inFile
         \Continuefalse
       \else
         \Continuetrue
         \ifx\inLine\empty
            \advance\emptyLines\@ne
          \else
            \emptyLines\z@
          \fi
          \ifnum \emptyLines<2
            \expandafter\processLine\inLine\endLine
          \else
            \maybeMsg{/}%
          \fi
       \fi
      \fi
    \ifContinue
    \repeat
    \closeOption
    \immediate\closein\inFile
    \Msg{Lines \space processed: \the\processedLines^^J%
         Comments removed: \the\commentsRemoved^^J%
         Comments \space passed: \the\commentsPassed^^J%
         Codelines passed: \the\codeLinesPassed^^J}%
      \global\advance\TotalprocessedLines  by \processedLines
      \global\advance\TotalcommentsRemoved by \commentsRemoved
      \global\advance\TotalcommentsPassed  by \commentsPassed
      \global\advance\TotalcodeLinesPassed by \codeLinesPassed
      \global\advance\NumberOfFiles by \@ne
    \fi}}
\def\WritePreamble{%
    \WriteOut{%
        \DoubleperCent ^^J%
        \DoubleperCent This is file `\outFileName', generated %
                        on <\the\year/\the\month/\the\day> ^^J%
        \DoubleperCent with the docstrip utility (\fileversion).%
             }%
    \ReferenceLines
    \WriteOut{%
        \DoubleperCent ^^J%
        \DoubleperCent IMPORTANT NOTICE:^^J%
        \DoubleperCent You are not allowed to distribute this file.^^J%
        \DoubleperCent For distribution of the original source see^^J%
        \DoubleperCent the copyright notice in the file \inFileName.^^J%
        \DoubleperCent }}
\def\OriginalRefs{%
    \WriteOut{\DoubleperCent }%
    \WriteOut{\DoubleperCent The original source file was
              `\inFileName'.}%
    \ifx\Options\empty\else
        \WriteOut{\DoubleperCent Included options: `\Options'.}\fi
    \WriteOut{\DoubleperCent }}
\let\ReferenceLines\OriginalRefs
\def\WritePostamble{%
    \WriteOut{\string\endinput}%
    \WriteOut{\DoubleperCent ^^J%
              \DoubleperCent End of file `\outFileName'.}}
\def\preamble{\begingroup
    \def\tmp{\par}%
    \def\Endpreamble{\endpreamble}%
    \Continuetrue
    \let\inFileName\relax
    \let\outFileName\relax
    \let\ReferenceLines\relax
    \gdef\WritePreamble{%
        \WriteOut{\DoubleperCent ^^J%
                  \DoubleperCent This is file `\outFileName',
                                 generated ^^J%
                  \DoubleperCent on <\the\year/\the\month/\the\day> with
                                 the docstrip utility (\fileversion).}%
        \ReferenceLines}%
    \loop
        \read\currbatchFile to \batchLine
        \ifx\batchLine\Endpreamble \Continuefalse
        \else
            \xdef\WritePreamble{%
                \WritePreamble
                \WriteOut{\DoubleperCent
                          \ifx\batchLine\tmp\else\batchLine\fi}}%
        \fi
    \ifContinue\repeat
    \endgroup}
\def\postamble{\begingroup
    \Continuetrue
    \def\Endpostamble{\endpostamble}%
    \def\tmp{\par}%
    \gdef\WritePostamble{}%
    \loop
        \read\currbatchFile to \batchLine
        \ifx\batchLine\Endpostamble \Continuefalse
        \else
            \xdef\WritePostamble{%
               \WritePostamble
               \WriteOut{\DoubleperCent
                         \ifx\batchLine\tmp\else\batchLine\fi}}%
        \fi
    \ifContinue\repeat
    \endgroup}
\def\processbatchFile{%
    \ifx\undefined\batchfile
      \let\batchfile\DefaultbatchFile
      \Defaulttrue
    \else
      \Defaultfalse
    \fi
    \openin\currbatchFile \batchfile\relax
    \ifeof\currbatchFile
      \ifDefault
      \else
        \Msg{**************************************************^^J%
             * Could not find your \string\batchfile=\batchfile^^J%
             * Try to continue without it^^J%
             **************************************************}%
      \fi
    \else
      \ifDefault
        \Msg{**************************************************^^J%
             * Batchfile \DefaultbatchFile\space found Use it? (y/n)?}%
        \Ask\answer{%
             **************************************************}%
      \else
        \let\answer\y
      \fi
      \ifx\answer\y
        \Continuetrue
        \let\endinput\Continuefalse
        \loop
          \ifeof\currbatchFile
            \Continuefalse
          \else
            \read\currbatchFile to \batchLine
            \batchLine
          \fi
        \ifContinue \repeat
      \fi
    \fi}
\def\ReportTotals{%
  \ifnum\NumberOfFiles>\@ne
    \Msg{Overall statistics:^^J%
         Files \space processed: \the\NumberOfFiles^^J%
         Lines \space processed: \the\TotalprocessedLines^^J%
         Comments removed: \the\TotalcommentsRemoved^^J%
         Comments \space passed: \the\TotalcommentsPassed^^J%
         Codelines passed: \the\TotalcodeLinesPassed}%
  \fi}
\def\SetFileNames{%
    \edef\inFileName{\MainFileName.\infileext}%
    \edef\outFileName{\MainFileName.\outfileext}}
\def\CheckFileNames{%
    \ifx\inFileName\outFileName
      \Msg{^^J%
     !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!^^J%
     ! It is not possible to read from and write to the same file !^^J%
     !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!^^J}%
      \Continuefalse
    \else
      \Continuetrue
      \immediate\openin\inFile \inFileName\relax
      \ifeof\inFile
        \Msg{^^J%
              !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!^^J%
              ! Your input file `\inFileName' was not found !^^J%
              !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!^^J}%
        \Continuefalse
      \else
        \immediate\closein\inFile
        \immediate\openin\inFile\WriteToDir \outFileName\relax
        \ifeof\inFile
          \Continuetrue
        \else
          \Continuefalse
          \Ask\answer{File \WriteToDir\outFileName\space already
                      exists
                      \ifx\@empty\WriteToDir somewhere \fi
                      on the system.^^J%
                      Overwrite it%
                      \ifx\@empty\WriteToDir\space if necessary\fi
                      ? [y/n]}%
          \ifx\y  \answer \Continuetrue \else
          \ifx\yes\answer \Continuetrue \else
          \fi\fi
        \fi
      \fi
    \fi
    \immediate\closein\inFile}
\def\interactive{%
  \whileswitch\ifMoreFiles\fi%
   {\begingroup
      \AskQuestions
      \forlist\MainFileName:=\filelist
      \do
        \SetFileNames
        \CheckFileNames
        \ifContinue
          \immediate\openout\outFile\WriteToDir\outFileName\relax
          \WritePreamble
          \generateFileX
          \WritePostamble
          \immediate\closeout\outFile
        \fi%
      \od
    \endgroup
    \Ask\answer{More files to process (y/n)?}%
    \ifx\y  \answer\MoreFilestrue \else
    \ifx\yes\answer\MoreFilestrue \else
                   \MoreFilesfalse\fi\fi
   }}
\def\AskQuestions{%
    \Msg{^^J%
         ****************************************************}%
    \Ask\infileext{%
         * First type the extension of your input file(s): \space  *}%
    \Msg{****************************************************^^J^^J%
         ****************************************************}%
    \Ask\outfileext{%
         * Now type the extension of your output file(s) \space: *}%
    \Msg{****************************************************^^J^^J%
         ****************************************************}%
    \Ask\Options{%
       * Now type the name(s) of option(s) to include \space\space: *}%
    \Msg{****************************************************^^J^^J%
         ****************************************************^^J%
       * Finally give the list of input file(s) without \space\space*}%
    \Ask\filelist{%
         * extension seperated by commas if necessary %
                                  \space\space\space\space: *}%
    \Msg{****************************************************^^J}}%
\Msg{Utility: `docstrip' \fileversion\space <\filedate>^^J%
     English documentation \space\space\space <\docdate>}%
\Msg{^^J%
     **********************************************************^^J%
     * This program converts documented macro-files into fast *^^J%
     * loadable files by stripping off (nearly) all comments! *^^J%
     **********************************************************^^J}%
\processbatchFile
  \ifnum\NumberOfFiles=\z@
    \interactive
  \fi
\ReportTotals
\endinput
%% End of file `docstrip.tex'.