% PARALLEL MARK MACROS (PARMARK) version 2.11,
% written by Herman Haverkort, 11 april 1995.
% See end of file for information on warranty, distribution etc.

\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{hhparmrk}[1995/04/11 Parallel marks]
\RequirePackage{hhunits}[1995/02/10]
\RequirePackage{hhflxbox}[1995/03/23]
\RequirePackage{hhutils0}[1995/03/08]

\DeclareOption{trafficsigns}{} % obsolete
\ProcessOptions

% WARNING: This package does not work properly when combined with
% hhmuf version 1.00! With later versions there is no problem.
%
% The parallel mark macros have been designed to mark fragments of text
% without interfering with its hierarchical structure. This
% can be extremely useful when developing texts which should be judged
% and approved repeatly by several people, such as regulations or other
% common statements. Recent changes, new proposals etc. could be
% marked easy, clearly and beautifully at the same time. Parallel marks
% could also be used to indicate levels of importance, confidentiality
% etc., without disturbing the optical appearance of the text too much
% by using different font sizes etc.
% A drawback of the parallel mark macros is that marked text fragments
% cannot be split across pages. To make such a split possible, you have
% to split the fragment yourself and mark each part seperately. Another
% way to enable splits is to use \dopars. Even then though paragraphs
% cannot be split. For more explanation on \dopars see below.
%
%
% =============================================================================
% - \bracespan(LEFTSPAN()RIGHTSPAN){TEXT}
%
% The TEXT may be several paragraphs long. Either (LEFTSPAN( or )RIGHTSPAN)
% may be omitted. Both LEFTSPAN and RIGHTSPAN have the following syntax:
%   {SIGN}WIDTH[OFFSET]{COMMENT}
%
% The SIGN should be one of the mathematical delimiter symbols which are
% constructed with repeatable extensions. Examples are: ), [, |, \rgroup,
% \} and \Updownarray. The SIGN is set next to the TEXT, while the COMMENT
% is set vertically centered next to the SIGN. The WIDTH specifies the amount
% of space which is available for the SIGN and the COMMENT. The WIDTH should
% be specified by:
%   :-             which stands for the amount of space necessary if the
%                  COMMENT should not be broken across several lines (the
%                  natural width), or:
%   :{DIMENSION}   which specifies a `hard' width and may force the COMMENT
%                  to be broken across several lines, or:
%   {UNITNAME}:    which stands for the maximum natural width of all
%                  sign-comment combinations set with the same UNITNAME.
% The [OFFSET] is optional. If specified it should be a dimension surrounded
% by brackets [ and ]. The OFFSET determines the amount of indentation of
% the spanned TEXT when compared to surrounding unspanned text. If the
% OFFSET is omitted, it is set equal to the WIDTH.
%
% For compatibility yet another (old) syntax of \bracespan is supported:
% \bracespan[SIDE]{SIGN}{OFFSET}{COMMENT}{TEXT}
% This has the same meaning as:
% \bracespan({SIGN}:-[OFFSET]{COMMENT}({TEXT} if SIDE = l, or
% \bracespan){SIGN}:-[OFFSET]{COMMENT}){TEXT} if SIDE = r.
%
% Furthermore there is a environment variant of \bracespan which consists
% of \begin{bracespanned} (with the same arguments as \bracespan, except
% for the spanned text) and \end{bracespanned}.
% =============================================================================

\newenvironment{bracespanned}%
  {\begingroup\@h@bspenvironmenttrue\h@Zbspan}%
  {\h@Ibspan\h@scopecorrection}
\def\bracespan{\begingroup\@h@bspenvironmentfalse\h@Zbspan}
\def\h@Zbspan{\@ifnextchar[{\h@sspan}{\h@dspan}}
\def\h@sspan[#1]#2#3#4{\h@ifstr{#1}l%
  {\h@dspan({#2}:-[#3]{#4}(}%
  {\h@dspan){#2}:-[#3]{#4})}}
\def\h@dspan{\@ifnextchar){\h@Abspan(.:-(}{\h@Abspan}}
\def\h@Abspan(#1({\@ifnextchar){\h@Bbspan(#1(}{\h@Bbspan(#1().:-)}}
\def\h@Bbspan(#1#2:{\def\h@bsplsign{#1}\def\h@bspwidth{#2}%
  \h@ifspecified{#2}{\h@Cbspan-}{\h@Cbspan}}
\def\h@Cbspan#1{\@ifnextchar[%
  {\h@Dbspan{#1}}%
  {\h@Dbspan{#1}[\h@auto]}}
\def\h@Dbspan#1[#2]#3()#4#5:{%
  \if@noskipsec\leavevmode\fi \par\mufoff
  % Store left comment in \@tempboxb and left offset in \@tempdimb
  \h@spansetcomment\h@bsplsign.\h@bspwidth{#1}{#2}{#3}\@tempboxb\@tempdimb
  \def\h@bsprsign{#4}\def\h@bspwidth{#5}%
  \h@ifspecified{#5}{\h@Ebspan-}{\h@Ebspan}}
\def\h@Ebspan#1{\@ifnextchar[%
  {\h@Fbspan{#1}}%
  {\h@Fbspan{#1}[\h@auto]}}
\def\h@Fbspan#1[#2]#3){%
  % Store right comment in \@tempboxc and left offset in \@tempdimc
  \h@spansetcomment.\h@bsprsign\h@bspwidth{#1}{#2}{#3}\@tempboxc\@tempdimc
  \if@h@bspenvironment\def\next{\h@Hbspan\ignorespaces}%
                 \else\def\next{\h@Gbspan}\fi\next}
\long\def\h@Gbspan#1{\h@Hbspan #1\h@Ibspan}
\def\h@Hbspan{%
  % Store total indentation in \@tempdima
  \setlength\@tempdima\@tempdimb \addtolength\@tempdima\@tempdimc
  % Type-set text to be spanned
  \setbox\@tempboxa\broadboxed\@tempdima\topsqueezeout}
\def\h@Ibspan{\h@savelocals\botsqueezeout\endbroadboxed
  % Determine the vertical shift which is necessary to center the spanning
  % symbols and comments; store it in \@tempdima
  \sbox\@tempboxd{\ensuremath{\vcenter{\copy\@tempboxa}}}%
  \setlength\@tempdima{\ht\@tempboxd}\addtolength\@tempdima{-\ht\@tempboxa}%
  % Type-set left spanning delimiter together with comment (if present)
  \sbox\@tempboxb{%
   \setlength\nulldelimiterspace\z@
   \lower\@tempdima\hbox{\ensuremath{\m@th\displaystyle{%
      \ifdim\wd\@tempboxb>\z@\box\@tempboxb\fi
      \left\h@bsplsign\vphantom{\copy\@tempboxd}\right.}}}}%
  % Type-set right spanning delimiter together with comment (if present)
  \sbox\@tempboxc{%
   \setlength\nulldelimiterspace\z@
   \lower\@tempdima\hbox{\ensuremath{\m@th\displaystyle{%
      \left.\vphantom{\copy\@tempboxd}\right\h@bsprsign
      \ifdim\wd\@tempboxc>\z@\box\@tempboxc\fi}}}}%
  % Determine depth of last line of spanned text
  \h@getvirtualdepth\@tempboxa
  % Put it all together
  \topsqueezein
  \h@soberhmode
  \hbox{\kern\@tempdimb\llap{\box\@tempboxb}\box\@tempboxa\rlap{\box\@tempboxc}}%
  \par
  \botsqueezein
  \endgroup
  % Set \prevdepth to depth of last line of spanned text
  \prevdepth\h@virtualdepth
  \muffin
  \ignorespaces}
\newif\if@h@bspenvironment\@h@bspenvironmentfalse
\def\h@spansetcomment#1#2#3#4#5#6#7#8{%
  % Store delimiter at largest possible size in \@tempboxa (including
  % any surrounding space)
  \sbox\@tempboxa{%
   \setlength\nulldelimiterspace\z@
   \ensuremath{\m@th\displaystyle{%
     \h@ifspecified{#6}{\,}{}%
     \left#1\vphantom{\vrule height\paperheight}\right#2}}}%
  \h@ifstr-{#4}%
   {\sbox#7{\mufoff\@makespancomment{#6}}}%
   % If width is specified, then set the comment in a box with the
   % specified width minus the width of the largest possible delimiter
   {\setlength#8{#4}\addtolength#8{-\wd\@tempboxa}%
    \sbox#7{\ensuremath{\vcenter{\hsize#8\relax\@makespancomment{#6}}}}}%
  % Calculate the width of the span; that is the width of the comment
  % plus the width of the largest possible delimiter + surrounding space
  \setlength#8{\wd#7}%
  \addtolength#8{\wd\@tempboxa}%
  % Execute unit width handling
  \h@ifespecified{#3}{\setlength#8{\unit {#3}:#8}}{}%
  % If offset was specified, then store the specified value, else leave
  % it so that the width is kept as offset value.
  \h@ifstr\h@auto{#5}{}{\setlength#8{#5}}}

% =============================================================================
% \@makespancomment defines how a comment next to span is to be type-set.
% Redefine it if you like. By default \@makespancomment selects a smaller
% font and redefines the \@makemufmark macro which is part of the hhmuf
% package. The latter is useful if you want to use hhmuf's multinotes as
% comments, but it is not if you want to use multinotes _in_ comments!
% The same holds for normal footnotes and redefinition of \@makefnmark.
% Note that the hhmuf package is not included automatically by hhparmrk:
% if you want to use it you have to include it yourself.
% =============================================================================

\long\def\@makespancomment#1{{%
  \def\@makemufmark##1{\ensuremath{##1}}%
  \def\@makefnmark##1{\ensuremath{##1}}%
  \setlength\parindent\z@
  \raggedright\tolerance=200\emergencystretch=10pt\small #1\par}}

% =============================================================================
% - \markspan(LEFTSPAN()RIGHTSPAN){TEXT}
%
% The TEXT may be several paragraphs long. Either (LEFTSPAN( or )RIGHTSPAN)
% may be omitted. Both LEFTSPAN and RIGHTSPAN have the following syntax:
%   {UPMARK}[FILL]{LOWMARK}[ALIGNMENT]{MARKSEP}[OFFSET]
%
% A mark is set next to the text. The mark consists of a upper part, a
% lower part and a fill in between. The fill - if specified - should be a
% macro that takes one argument: the required size. There is one fill
% predefined: \msprule, which sets a vertical rule with width \fboxrule.
% The upper part, the lower part and the fill are horizontally aligned
% according to the specified ALIGNMENT, which should be l (left), r (right),
% i (in), o (out) or c (centered). The specifying of ALIGNMENT is optional;
% if omitted the alignment is assumed to be c (centered). i is like r for
% left spans while it is like l for right spans. Similarly o is like l
% for left spans and like r for right spans.
% MARKSEP should be a dimension which specifies the amount of space which
% is to be left between the mark and the spanned text.
% The [OFFSET] is optional. If specified it should be a dimension surrounded
% by brackets [ and ]. The OFFSET determines the amount of indentation of
% the spanned TEXT when compared to surrounding unspanned text. If the
% OFFSET is omitted, it is set equal to the width of the spanning marks.
%
% There is a environment variant of \markspan which consists
% of \begin{markspanned} (with the same arguments as \markspan, except for the
% spanned text) and \end{markspanned}.
% =============================================================================

\newenvironment{markspanned}%
  {\begingroup\@h@mspenvironmenttrue\h@Zmspan}%
  {\h@Kmspan\h@scopecorrection}
\def\markspan{\begingroup\@h@mspenvironmentfalse\h@Zmspan}
\def\h@Zmspan{\@ifnextchar){\h@Amspan({}{}\z@(}{\h@Amspan}}
\def\h@Amspan(#1({\@ifnextchar){\h@Bmspan(#1(}{\h@Bmspan(#1(){}{}\z@)}}
\def\h@Bmspan(#1{\def\h@mspupmark{#1}%
  \@ifnextchar[{\h@Cmspan}{\h@Cmspan[\h@emptymarkspan]}}
\def\h@Cmspan[#1]#2{\def\h@msplfill{#1}\def\h@mspbotmark{#2}%
  \@ifnextchar[{\h@Dmspan}{\h@Dmspan[c]}}
\def\h@Dmspan[#1]#2{\def\h@msplalign{#1}\def\h@msplsep{#2}%
  \@ifnextchar[{\h@Emspan}{\h@Emspan[\h@auto]}}
\def\h@Emspan[#1]()#2{%
  \if@noskipsec\leavevmode\fi \par\mufoff
  % Store upper left mark in \@tempboxb, lower left mark in \@tempboxc,
  % width of left marks in \@tempdimb, left offset in \@tempdimc.
  \h@spansetmark\h@mspupmark\h@mspbotmark\h@msplsep{#1}%
                \@tempboxb\@tempboxc\@tempdimb\@tempdimc
  \def\h@mspupmark{#2}%
  \@ifnextchar[{\h@Fmspan}{\h@Fmspan[\h@emptymarkspan]}}
\def\h@Fmspan[#1]#2{\def\h@msprfill{#1}\def\h@mspbotmark{#2}%
  \@ifnextchar[{\h@Gmspan}{\h@Gmspan[c]}}
\def\h@Gmspan[#1]#2{\def\h@mspralign{#1}\def\h@msprsep{#2}%
  \@ifnextchar[{\h@Hmspan}{\h@Hmspan[\h@auto]}}
\long\def\h@Hmspan[#1]){%
  \h@spansetmark\h@mspupmark\h@mspbotmark\h@msprsep{#1}%
                \@tempboxd\@tempboxe\@tempdimd\@tempdime
  \if@h@mspenvironment\def\next{\h@Jmspan\ignorespaces}%
                 \else\def\next{\h@Imspan}\fi\next}
\long\def\h@Imspan#1{\h@Jmspan #1\h@Kmspan}
\def\h@Jmspan{%
  % By now the upper and lower left marks are stored in tempboxb and -c,
  % while the upper and lower right marks are stored in tempboxd and -e.
  % Furthermore tempdimb and tempdimc contain the width of the left mark
  % and the left offset; tempdimd and -e the right mark's width and offset.
  \setlength\@tempdima\@tempdimc \addtolength\@tempdima\@tempdime
  \setbox\@tempboxa\broadboxed\@tempdima\topsqueezeout}
\def\h@Kmspan{\h@savelocals\botsqueezeout\endbroadboxed
  % Now \@tempdima will be used to store the total height of \@tempboxa;
  \setlength\@tempdima{\ht\@tempboxa}\addtolength\@tempdima{\dp\@tempboxa}%
  % \@tempdime will be used to store the amount of fill necessary
  % for the left mark
  \setlength\@tempdime\@tempdima
  \addtolength\@tempdime{-\ht\@tempboxb}\addtolength\@tempdime{-\ht\@tempboxc}%
  % Compose the left mark
  \setbox\@tempboxb\vbox{%
   \hsize\@tempdimb \offinterlineskip
   \h@markspanalign l\h@msplalign{\box\@tempboxb}%
   % Leave out the fill if there is no room
   \ifdim\@tempdime<\z@\else\h@markspanalign l\h@msplalign{\h@msplfill\@tempdime}\fi
   \h@markspanalign l\h@msplalign{\box\@tempboxc}}%
  \sbox\@tempboxb{\lower\ht\@tempboxb\box\@tempboxb}%
  % Now \@tempdime will be used to store the amount of fill for the right mark
  \setlength\@tempdime\@tempdima
  \addtolength\@tempdime{-\ht\@tempboxd}\addtolength\@tempdime{-\ht\@tempboxe}%
  % Compose the right mark
  \setbox\@tempboxc\vbox{%
   \hsize\@tempdimd \offinterlineskip
   \h@markspanalign r\h@mspralign{\box\@tempboxd}%
   % Leave out the fill if there is no room
   \ifdim\@tempdime<\z@\else\h@markspanalign r\h@mspralign{\h@msprfill\@tempdime}\fi
   \h@markspanalign r\h@mspralign{\box\@tempboxe}}%
  \sbox\@tempboxc{\lower\ht\@tempboxc\box\@tempboxc}%
  % Determine depth of last line of spanned text
  \h@getvirtualdepth\@tempboxa
  \setlength\@tempdima{\ht\@tempboxa}%
  % Now put it all together
  \topsqueezein
  \h@soberhmode
  \hbox{%
   % Realize left offset
   \kern\@tempdimc
   % Put left mark on the left (including the specified mark seperation)
   \llap{\raise\@tempdima\box\@tempboxb\kern \h@msplsep}%
   \box\@tempboxa
   % Put right mark on the right (including the specified mark seperation)
   \rlap{\kern \h@msprsep\raise\@tempdima\box\@tempboxc}}%
  \par
  \botsqueezein
  \endgroup
  % Set \prevdepth to depth of last line of spanned text
  \prevdepth\h@virtualdepth
  \muffin
  \ignorespaces}
\newif\if@h@mspenvironment\@h@mspenvironmentfalse
\def\h@spansetmark#1#2#3#4#5#6#7#8{%
  % Type-set upper and lower marks; make sure they have no depth to ease
  % further calculations
  \sbox#5{#1}\sbox#5{\raise\dp#5\box#5}%
  \sbox#6{#2}\sbox#6{\raise\dp#6\box#6}%
  % Determine the largest width of the upper and lower marks and store it
  \setlength#7{\wd#5}%
  \ifdim#7<\wd#6\setlength#7{\wd#6}\fi
  % If offset is specified, then store the specified offset, else store
  % the calculated width increased by the mark seperation
  \h@ifstr\h@auto{#4}%
   {\setlength#8#7\addtolength#8{#3}}%
   {\setlength#8{#4}}}
\def\h@markspanalign#1#2#3{%
  % Translate out/in to left/right or right/left, depending on side which
  % is handled now (specified in #1).
  \expandafter\ifx#2o\def\@tempa{#1}\else
   \expandafter\ifx#2i\ifx l#1\def\@tempa{r}\else\def\@tempa{l}\fi
   \else\let\@tempa=#2\fi
  \fi
  \hbox to \hsize{%
   \expandafter\ifx\@tempa l\else\hfill\fi
   #3\expandafter\ifx\@tempa r\else\hfill\fi}}
\def\h@emptymarkspan#1{\vphantom{\msprule{#1}}}
\def\msprule#1{\vrule height #1 width \fboxrule}

% ============================================================================
% TRAPEZIUM FRAMES AND READERS TRAFFIC SIGNS
%
% Because Frans Goddijn likes them so much I included them in the
% basis package: the trapezium frames and the readers traffic signs!
% for example: \trafficsign{\trapbox:}{Hi}{Hello world!} would produce
% the text "Hello world!", spanned by a round traffic sign saying "Hi".
% The traffic sign is supported by a post on a triangular foot and shows up
% next to the marked text in the left margin. trafficsigned is the
% environment version of \trafficsign.
% There exist asterisk version \trafficsign* and trafficsigned* which
% make the signed text indent instead of pushing the sign into the margin.
% ============================================================================

\def\trapbox{\iframe\@trapbox(170,0){1160}{11pt}\ifrch\ifrcv}
\def\@trapbox{%
  \begin{picture}(1500,1000)
    \put(200,0){\line(1,0){1100}}
    \put(1300,0){\line(1,5){200}}
    \put(1500,1000){\line(-1,0){1500}}
    \put(0,1000){\line(1,-5){200}}
  \end{picture}}

\def\@trafficsigned#1#2#3{\markspanned(%
  {#2{\separbox{2pt}{\large\bf #3}}}%
  [\msprule]%
  {\sepbox(\z@,1pt,\z@,\z@){\large\ensuremath{\bigtriangleup}}}%
  {1em}%
  #1(}
\def\@endtrafficsigned{\ifhmode\strut\fi\endmarkspanned}
\newenvironment{trafficsigned}%
  {\@trafficsigned{[\z@]}}{\@endtrafficsigned}
\newenvironment{trafficsigned*}%
  {\@trafficsigned{}}{\@endtrafficsigned}

\def\@trafficsign#1#2#3#4{\begin{trafficsigned#1}{#2}{#3}#4\end{traficsigned#1}}
\def\trafficsign{\@ifnextchar*\@trafficsign{\@trafficsign{}}}

% ============================================================================
% OPTION FRAMES
%
% \optionframe{BEFORESKIP}{AFTERSKIP}{LABEL}{STUFF} renders stuff in a frame
% labelled with a encircled LABEL, which is typically a single character.
% BEFORESKIP and AFTERSKIP specify the amount of vertical space to be left
% before and after the frame.
% This kind of frames is called \optionframes since I first used them
% to denote optional passages in regulations which were subject to
% discussion yet.
% \begin{optionframed}{LABEL}STUFF\end{optionframed} is the environment
% version of \optionframe.
% ============================================================================

\newenvironment{optionframed}[3]{%
  \if@noskipsec\leavevmode\fi
  \par \if@nobreak\else\addvspace{#1}\fi
  \def\h@of@afterskip{#2}%
  \fboxsep 3pt
  \nointerlineskip
  \hbox\bgroup\sbox\@tempboxa\bgroup\mufoff\begin{broadboxed}{6.8pt}%
     \@h@nohmodetrue
     \begin{markspanned}
      ({\bellybox of@optionlabel:{\separbox{1pt}{\large\bf #3}}}{}{10pt}(%
      \boxhigh}%
 {\boxlow\end{markspanned}\end{broadboxed}\egroup
  \fbox{\box\@tempboxa}\egroup\muffin
  \par\addvspace\h@of@afterskip\h@scopecorrection}

% ============================================================================
% \dopars{MACRO}
%
% MACRO should be a macro that takes one argument: a paragraph. Instead of
% a one argument macro you could also use a multiple argument macro, for
% which you specify all arguments but the last one, which is to contain
% the paragraph to be type-set.
% \dopars sets all following paragraphs using MACRO, until \srapod is
% encountered just after a \par (or a empty line).
% ============================================================================

\def\dopars#1{\bgroup\def\h@dopar{#1}\ignorespaces\h@dopars}
\def\h@dopars{\@ifnextchar\srapod{\egroup\@gobble}{\h@@dopars}}
\def\h@@dopars#1\par{\h@dopar{#1\par}\h@dopars}

% ***********************************************
% * SOME INITIALIZATIONS AND INTERNAL UTILITIES *
% ***********************************************

\h@newbox\@tempboxb
\h@newbox\@tempboxc
\h@newbox\@tempboxd
\h@newbox\@tempboxe
\h@newbox\@discabox
\h@newdimen\@tempdimc
\h@newdimen\@tempdimd
\h@newdimen\@tempdime
\h@newdimen\h@virtualdepth
\h@newtoks\h@sc@everypar

\def\h@getvirtualdepth#1{{%
  % Determine the depth of the last line of the spanned text
  \setbox\@discabox\copy#1%
  \setbox\@discabox\vbox{%
    \unvbox\@discabox
    \setbox\@discabox\lastbox
    \global\h@virtualdepth\dp\@discabox}}}

\newif\if@h@nohmode
\def\h@soberhmode{\if@h@nohmode\else
    \everypar{}\setlength\parindent\z@\parshape0\setlength\hangindent\z@
    \setlength\leftskip\z@\setlength\linewidth\hsize
    \leavevmode\fi}

\def\h@savelocals{%
  \global\h@sc@everypar=\everypar
  \global\let\h@sc@par=\par
  \global\let\h@sc@@par=\@par
  \global\let\h@sc@@currentlabel=\@currentlabel}

\def\scopecorrection{\h@savelocals\h@scopecorrection}
\def\h@scopecorrection{\aftergroup\h@@scopecorrection}
\def\h@@scopecorrection{%
  \everypar=\h@sc@everypar
  \let\par=\h@sc@par
  \let\@par=\h@sc@@par
  \let\@currentlabel=\h@sc@@currentlabel}

\providecommand\mufoff{}
\providecommand\muffin{}

\endinput% **********************
% * WARRANTY, DISTRIBUTION ETC. *
% *******************************
%
% This is a TeX style file by Herman Haverkort. This file 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. The author does not accept any responsability for any damage,
% loss, injury, psychosis, annoyance, marital problems, murders etc. which
% are caused by this file.
%
% This style file has not been tested systematically, so there are
% probably undiscoverd errors in it. If you find one, if you have
% trouble using this file, if you have a suggestion for an extension or
% another modification, or if you are just a happy user, please report
% it to:
%                       Herman Haverkort
%                       Heyenoordseweg 40
%                      NL-6813 GA  Arnhem
%                      herman@fgbbs.iaf.nl
%
% You are allowed to change this file, but you are not allowed to distribute
% the changed version unless you obey the following:
% -  give the changed version another file name than the original one;
% -  record clearly in the changed version:
%    -  the original name of the file;
%    -  its original author;
%    -  that it is a changed version;
% -  do not remove the restrictions on distributing this file.
%
% 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.
%
% Have fun!

