% ISO DOCUMENT STYLE <91/05/02>
%    for LaTeX version 2.09

% @(#)iso10.sty	2.6 dated 91/05/02 at 09:57:33

% File:       iso10.sty
% Author:     Nicolas North
% Email:      ndn@seg.npl.co.uk
% Date:       91/05/02
%
% A rewrite of art10.doc to typeset in ISO central secretariat-approved
% style.

% This file is based on Leslie Lamport's art10.doc.

%  ****************************************
%  *               FONTS                  *
%  ****************************************
%

\lineskip 1pt            % \lineskip is 1pt for all font sizes.
\normallineskip 1pt
\def\baselinestretch{1}

% Each size-changing command \SIZE executes the command
%        \@setsize\SIZE{BASELINESKIP}\FONTSIZE\@FONTSIZE
% where:
%   BASELINESKIP = Normal value of \baselineskip for that size.  (Actual 
%                  value will be \baselinestretch * BASELINESKIP.)
%
%  \FONTSIZE     = Name of font-size command.  The currently available
%                  (preloaded) font sizes are: \vpt (5pt), \vipt (6pt),
%                  \viipt (etc.), \viiipt, \ixpt, \xpt, \xipt, \xiipt,
%                  \xivpt, \xviipt, \xxpt, \xxvpt.
%  \@FONTSIZE    = The same as the font-size command except with an
%                  '@' in front---e.g., if \FONTSIZE = \xivpt then
%                  \@FONTSIZE = \@xivpt.
%
% For reasons of efficiency that needn't concern the designer,
% the document style defines \@normalsize instead of \normalsize .  This is
% done only for \normalsize, not for any other size-changing commands.

\def\@normalsize{\@setsize\normalsize{12pt}\xpt\@xpt
\abovedisplayskip 10pt plus2pt minus5pt%
\belowdisplayskip \abovedisplayskip
\abovedisplayshortskip  \z@ plus3pt%   
\belowdisplayshortskip  6pt plus3pt minus3pt%
\let\@listi\@listI}

\def\small{\@setsize\small{10pt}\ixpt\@ixpt
\abovedisplayskip 8.5pt plus 3pt minus 4pt%
\belowdisplayskip \abovedisplayskip
\abovedisplayshortskip \z@ plus2pt%
\belowdisplayshortskip 4pt plus2pt minus 2pt
\def\@listi{\leftmargin\leftmargini%
\let\isoclauseref\@currentlabel
\itemindent\leftmargini}}

\def\footnotesize{\@setsize\footnotesize{9.5pt}\viiipt\@viiipt
\abovedisplayskip 6pt plus 2pt minus 4pt%
\belowdisplayskip \abovedisplayskip
\abovedisplayshortskip \z@ plus 1pt%
\belowdisplayshortskip 3pt plus 1pt minus 2pt
\def\@listi{\leftmargin\leftmargini%
\let\isoclauseref\@currentlabel
\itemindent\leftmargini}}

\def\scriptsize{\@setsize\scriptsize{8pt}\viipt\@viipt}
\def\tiny{\@setsize\tiny{6pt}\vpt\@vpt}
\def\large{\@setsize\large{13pt}\xipt\@xipt}
\def\Large{\@setsize\Large{15pt}\xiipt\@xiipt}
\def\LArge{\@setsize\LArge{18pt}\xivpt\@xivpt}  % used for annex headings
\def\LARGE{\@setsize\LARGE{20pt}\xviipt\@xviipt}
\def\huge{\@setsize\huge{25pt}\xxpt\@xxpt}
\def\Huge{\@setsize\Huge{30pt}\xxvpt\@xxvpt}

% The size font in which the copyright notice is set.
% This should be 9pt.
\def\@copyrightsize{\small}

\normalsize  % Choose the normalsize font.


%  ****************************************
%  *            PAGE LAYOUT               *
%  ****************************************
%
% All margin dimensions measured from a point one inch from top and side
% of page.  

% SIDE MARGINS:
% These are the margins used for setting stuff before the title.
% \maketitle calls \iso@setmargins to set margins for the body of the
%   standard.
\if@twoside                 % Values for two-sided printing (the default):
   \oddsidemargin  59mm     %   Left margin on odd-numbered pages.
   \evensidemargin -14mm    %   Left margin on even-numbered pages.
   \marginparwidth 8mm      %   Width of marginal notes (none in ISO standards).
\else                       % Values for one-sided printing:
			    %   (can't happen in ISO style)
   \oddsidemargin  -23pt    %   Note that \oddsidemargin = \evensidemargin
   \evensidemargin -23pt
   \marginparwidth 90pt 
\fi
\marginparsep 1mm          % Horizontal space between outer margin and 
                            % marginal note

% Allow the user to shift the page across if their laser printer is
% mis-aligned. There should really be a vertical version of this as well.
\newdimen\@leftoffset \@leftoffset=\z@
\def\leftoffset#1{
    \setlength{\@leftoffset}{#1}
    \advance\oddsidemargin by\@leftoffset
    \advance\evensidemargin by \@leftoffset}

% VERTICAL SPACING:        
                         % Top of page:
\topmargin -54pt         %    Nominal distance from top of page to top of
                         %    box containing running head.
\headheight 25pt         %    Height of box containing running head.
\headsep 39pt            %    Space between running head and text.
% \topskip = 10pt        %    '\baselineskip' for first line of page.
                         % Bottom of page:
\footskip 27pt           %    Distance from baseline of box containing foot 
                         %    to baseline of last line of text.


% DIMENSION OF TEXT:

\textheight 240mm
\textwidth 117mm         % Width of text line.
                         % For two-column mode: 
\columnsep 10mm          %    Space between columns 
\columnseprule 0pt       %    Width of rule between columns.

% A \raggedbottom command causes 'ragged bottom' pages: pages set to
% natural height instead of being stretched to exactly \textheight.

% Page layout for the body of the standard
\def\iso@setmargins{
    \global\oddsidemargin -4mm
    \global\advance\oddsidemargin by\@leftoffset
    \global\evensidemargin -14mm
    \global\advance\evensidemargin by\@leftoffset
    \global\textwidth 180mm}

% FOOTNOTES:

\footnotesep 6.65pt   % Height of strut placed at the beginning of every
                      % footnote = height of normal \footnotesize strut,
                      % so no extra space between footnotes.

\skip\footins 9pt plus 4pt minus 2pt  % Space between last line of text and 
                                      % top of first footnote.

% FLOATS: (a float is something like a figure or table)
%
% NDN: I haven't changed the float parameters for the iso style
%
%  FOR FLOATS ON A TEXT PAGE:
%
%    ONE-COLUMN MODE OR SINGLE-COLUMN FLOATS IN TWO-COLUMN MODE:
\floatsep 12pt plus 2pt minus 2pt        % Space between adjacent floats moved
                                         % to top or bottom of text page.
\textfloatsep 20pt plus 2pt minus 4pt    % Space between main text and floats
                                         % at top or bottom of page.
\intextsep 12pt plus 2pt minus 2pt       % Space between in-text figures and 
                                         % text.
\@maxsep 20pt                            % The maximum of \floatsep, 
                                         % \textfloatsep and \intextsep (minus
                                         % the stretch and shrink).
%    TWO-COLUMN FLOATS IN TWO-COLUMN MODE:
\dblfloatsep 12pt plus 2pt minus 2pt     % Same as \floatsep for double-column
                                         % figures in two-column mode.
\dbltextfloatsep 20pt plus 2pt minus 4pt % \textfloatsep for double-column 
                                         % floats.
\@dblmaxsep 20pt                         % The maximum of \dblfloatsep and 
                                         % \dbltexfloatsep.

%  FOR FLOATS ON A SEPARATE FLOAT PAGE OR COLUMN:
%    ONE-COLUMN MODE OR SINGLE-COLUMN FLOATS IN TWO-COLUMN MODE:
\@fptop 0pt plus 1fil    % Stretch at top of float page/column. (Must be    
                         % 0pt plus ...)                                    
\@fpsep 8pt plus 2fil    % Space between floats on float page/column.       
\@fpbot 0pt plus 1fil    % Stretch at bottom of float page/column. (Must be 
                         % 0pt plus ... )                                   

%   DOUBLE-COLUMN FLOATS IN TWO-COLUMN MODE.
\@dblfptop 0pt plus 1fil % Stretch at top of float page. (Must be 0pt plus ...)
\@dblfpsep 8pt plus 2fil % Space between floats on float page.
\@dblfpbot 0pt plus 1fil % Stretch at bottom of float page. (Must be 
                         % 0pt plus ... )                                   
% MARGINAL NOTES:
%
\marginparpush 5pt       % Minimum vertical separation between two marginal 
                         % notes.


%  ****************************************
%  *           PARAGRAPHING               *
%  ****************************************
%
\parskip \baselineskip             % Extra vertical space between paragraphs.
\parindent 0pt                     % Width of paragraph indentation.
%\topsep 0pt plus 1pt minus 1pt     % Extra vertical space, in addition to 
                                   % \parskip, added above and below list and
                                   % paragraphing environments.
\partopsep 0pt plus 1pt minus 1pt  % Extra vertical space, in addition to 
                                   % \parskip and \topsep, added when user
                                   % leaves blank line before environment.
%\itemsep 2pt plus 1pt minus 1pt    % Extra vertical space, in addition to
                                   % \parskip, added between list items.

% The following page-breaking penalties are defined
% NDN: unchanged from art10.doc

\@lowpenalty   51      % Produced by \nopagebreak[1] or \nolinebreak[1]
\@medpenalty  151      % Produced by \nopagebreak[2] or \nolinebreak[2]
\@highpenalty 301      % Produced by \nopagebreak[3] or \nolinebreak[3]

\@beginparpenalty -\@lowpenalty    % Before a list or paragraph environment.
\@endparpenalty   -\@lowpenalty    % After a list or paragraph environment.
\@itempenalty     -\@lowpenalty    % Between list items.

% \clubpenalty         % 'Club line'  at bottom of page.
% \widowpenalty        % 'Widow line' at top of page.
% \displaywidowpenalty % Math display widow line.
% \predisplaypenalty   % Breaking before a math display.
% \postdisplaypenalty  % Breaking after a math display.
% \interlinepenalty    % Breaking at a line within a paragraph.
% \brokenpenalty       % Breaking after a hyphenated line.


%    ****************************************
%    *             SECTIONS                 *
%    ****************************************
%

% NDN: note that section names have changed from the usual LaTeX ones.

% \secdef{UNSTARCMDS}{STARCMDS} :
%    When defining a sectionioning command without using
%    \@startsection, you can use \secdef as follows:
%       \def\part { ... \secdef \CMDA \CMDB }
%       \def\CMDA  [#1]#2{ ... }     % Command to define \part[...]{...}
%       \def\CMDB  #1{ ... }         % Command to define \part*{...}

% NDN: I haven't considered parts for the iso style yet, so this is just
% as in art10.doc.
\def\part{\par               % New paragraph
   \addvspace{4ex}           % Adds vertical space above title.
   \@afterindentfalse        % Suppresses indent in first paragraph.  Change
   \secdef\@part\@spart}     % to \@afterindenttrue to have indent.

\def\@part[#1]#2{\ifnum \c@secnumdepth >\m@ne    % IF secnumdepth > -1
        \refstepcounter{part}                    %  THEN step part counter
        \addcontentsline{toc}{part}{\thepart     %       add toc line
        \hspace{1em}#1}\else                     %  ELSE add unnumbered line
      \addcontentsline{toc}{part}{#1}\fi         % FI
   { \parindent 0pt \raggedright 
    \ifnum \c@secnumdepth >\m@ne   % IF secnumdepth > -1 
      \Large \bf Part \thepart     %   THEN Print 'Part' and 
      \par \nobreak                %          number in \Large boldface.
    \fi                            % FI
    \huge \bf                      % Select \huge boldface.
    #2\markboth{}{}\par }          % Print title and set heading marks null.
    \nobreak                       % TeX penalty to prevent page break.
    \vskip 3ex                     % Space between title and text.
   \@afterheading                  % Routine called after part and
    }                              %     section heading.

% Heading for \part* command
\def\@spart#1{{\parindent 0pt \raggedright 
    \huge \bf                       
    #1\par}                         % Title.
    \nobreak                        % TeX penalty to prevent page break.
    \vskip 3ex                      % Space between title and text.
    \@afterheading                  % Routine called after part and
  }                                 %     section heading.

% \@startsection {NAME}{LEVEL}{INDENT}{BEFORESKIP}{AFTERSKIP}{STYLE} 
%            optional * [ALTHEADING]{HEADING}
%    Generic command to start a section.  
%    NAME       : e.g., 'clause'
%    LEVEL      : a number, denoting depth of section -- i.e., section=1,
%                 clause = 2, etc.  A section number will be printed if
%                 and only if LEVEL < or = the value of the secnumdepth
%                 counter.
%    INDENT     : Indentation of heading from left margin
%    BEFORESKIP : Absolute value = skip to leave above the heading.  
%                 If negative, then paragraph indent of text following 
%                 heading is suppressed.
%    AFTERSKIP  : if positive, then skip to leave below heading,
%                       else - skip to leave to right of run-in heading.
%    STYLE      : commands to set style
%  If '*' missing, then increments the counter.  If it is present, then
%  there should be no [ALTHEADING] argument.  A sectioning command
%  is normally defined to \@startsection + its first six arguments.

% A definition needs to set its number and title in
%  different sizes so it manipulates its argument before passing it on
%  to \@startsection.

% These spacings are provisional only.

\def\section{\@startsection {section}{1}{\z@}{3ex plus 1ex minus 
    .2ex}{.1ex plus .1ex}{\Large\bf}}
\def\clause{\@startsection{clause}{2}{\z@}{2ex plus .5ex minus
   .2ex}{.1ex plus .1ex}{\large\bf}}
\def\definition#1{\@startsection{definition}{2}{\z@}{2ex plus .5ex minus
   .2ex}{-.5em plus -.1em minus -.1em}{\large\bf}%
   {\protect{\normalsize\bf#1:\thinspace}}}
\def\subclause{\@startsection{subclause}{3}{\z@}{2ex plus 1ex minus
   .2ex}{.1ex plus .1ex}{\normalsize\bf}}
\def\subsubclause{\@startsection
     {subsubclause}{4}{\z@}{2ex plus 1ex minus .2ex}{.1ex plus .1ex}
     {\normalsize\bf}}
\def\namelesssubsubclause{\@startsection{namelesssubsubclause}{4}{\z@}{
     2ex plus 1ex minus .2ex}{-.5em plus -.1em minus -.1em}{\normalsize\bf}{}}
\def\subsubsubclause{\@startsection
     {subsubsubclause}{5}{\parindent}{2ex plus 1ex minus 
     .2ex}{.1ex plus .1ex}{\normalsize\bf}}
\def\namelesssubsubsubclause{\@startsection{namelesssubsubsubclause}{5}{\z@}{
     2ex plus 1ex minus .2ex}{-.5em plus -.1em minus -.1em}{\normalsize\bf}{}}

% Header for introductory sections which are set in \LArge.
% The spacing is provisional.
\def\@introsection{\@startsection{section}{1}{\z@}{3ex plus 1ex minus 
    .2ex}{.1ex plus .1ex}{\LArge\bf}*}

% A special command for the foreword. This ensures that
%  a new page is started and the title is in \LArge,
%  starting 84mm from the top of the page.
% If there is no foreword, we should skip a page number before the
%  introduction (if there is one). \if@foreword allows us to test whether
%  a foreword has appeared.
\newif\if@foreword \@forewordfalse
\def\foreword{
\@forewordtrue\newpage\vspace*{39mm}\@introsection{Foreword}
\addcontentsline{toc}{iso@intro}{\bf Foreword}}


% A special command for introductory sections. Ensures that
%  a new page is started, skipping a page number
%  if there was no foreword and camera-ready copy is being produced and the
%  title is in \LArge, starting 84mm from the top of the page.
% The spacing around the header is currently that for sections.
\def\introduction{
\newpage\vspace*{39mm}\@introsection{Introduction}
\addcontentsline{toc}{iso@intro}{\bf Introduction}
\if@cameraready\if@foreword\else\stepcounter{page}\fi\fi}
 

% Default initializations of \...mark commands.  (See below for their
% use in defining page styles.
%

\def\sectionmark#1{}           % Preloaded definitions
\def\clausemark#1{}
\def\definitionmark#1{}
\def\subclausemark#1{}
\def\subsubclausemark#1{}
\def\namelesssubsubclausemark#1{}
\def\subsubsubclausemark#1{}
\def\namelesssubsubsubclausemark#1{}

% The value of the counter secnumdepth gives the depth of the
% highest-level sectioning command that is to produce section numbers.
%

\setcounter{secnumdepth}{5}


%    ****************************************
%    *                LISTS                 *
%    ****************************************
%

% The following commands are used to set the default values for the list
% environment's parameters. See the LaTeX manual for an explanation of
% the meanings of the parameters.  Defaults for the list environment are
% set as follows.  First, \rightmargin, \listparindent and \itemindent
% are set to 0pt.  Then, for a Kth level list, the command \@listK is
% called, where 'K' denotes 'i', 'ii', ... , 'vi'.  (I.e., \@listiii is
% called for a third-level list.)  By convention, \@listK should set
% \leftmargin to \leftmarginK.
%
% For efficiency, level-one list's values are defined at top level, and
% \@listi is defined to set only \leftmargin
% NDN: list spacing is simple for ISO standards: everything is one line
% apart, so listii, listiii etc are very simple.
% ISO set all lists with a separation of 1em between label and text,
% regardless of the label width - looks awful but there you are.

\leftmargini 1em
\leftmarginii 1em
\leftmarginiii 1em
\leftmarginiv 1em
\leftmarginv 1em
\leftmarginvi 1em

\leftmargin\leftmargini
\labelsep 1em
\labelwidth 0pt
% \parsep 4pt plus 2pt minus 1pt (Removed 9 Jun 87)

% \@listI defines top level and \@listi values of
% \leftmargin, \itemindent, \topsep, \parsep, and \itemsep
% Sets up \isoclauseref so that enumerated lists can refer to it for labeling
\def\@listI{\leftmargin\leftmargini \parsep\baselineskip%
\itemindent\leftmargini
\let\isoclauseref\@currentlabel
\topsep 0pt plus 1pt minus 1pt%
\itemsep 0pt plus 1pt minus 1pt}

\let\@listi\@listI
\@listi 


\def\@listii{\leftmargin\leftmarginii
   \let\isoclauseref\@currentlabel
   \itemindent\leftmarginii}

\def\@listiii{\leftmargin\leftmarginiii
    \let\isoclauseref\@currentlabel
    \itemindent\leftmarginiii}

\def\@listiv{\leftmargin\leftmarginiv
     \let\isoclauseref\@currentlabel
     \itemindent\leftmarginiv}

\def\@listv{\leftmargin\leftmarginv
     \let\isoclauseref\@currentlabel
     \itemindent\leftmarginv}

\def\@listvi{\leftmargin\leftmarginvi
     \let\isoclauseref\@currentlabel
     \itemindent\leftmarginvi}