source 1

git-svn-id: svn://tug.org/texlive/trunk@105 c570f23f-e606-0410-a88d-b1316a301751

3 files changed, 3262 insertions, 0 deletions

diff --git a/Master/texmf-dist/source/latex/SIunits/SIunits.drv b/Master/texmf-dist/source/latex/SIunits/SIunits.drv
new file mode 100644
index 00000000000..60c630a5c4e
--- /dev/null
+++ b/Master/texmf-dist/source/latex/SIunits/SIunits.drv
@@ -0,0 +1,26 @@
+\documentclass[a4paper]{ltxdoc}
+\IfFileExists{hyperref.sty} {\usepackage{hyperref}}{\relax}
+ \IfFileExists{SIunits.sty}
+ {\usepackage[derivedinbase,derived,binary]{SIunits}}
+ {\GenericWarning{SIunits.DTX}
+ {Package file SIunits.STY not found!^^J
+ Generate SIunits.STY by (La)TeXing SIunits.INS,
+ process SIunits.DTX again.^^J}\stop}
+%%
+\GetFileInfo{SIunits.dtx}
+\CodelineIndex%
+\PageIndex% Comment out to get code line numbers in index.
+\CodelineNumbered%
+\EnableCrossrefs%
+%%\DisableCrossrefs% UnComment if the index is ready
+\OnlyDescription% Comment out to print Section "The Magic Code" as well.
+%%
+\begin{document}
+\DocInput{SIunits.dtx}
+ {\newpage\PrintIndex}
+ {\newpage\PrintChanges}
+\end{document}
+%% 
+%%  Source: $Id: SIunits.dtx,v 1.33 2002/08/01 11:20:00 root Exp root $
+%%
+%% End of file `SIunits.drv'.
diff --git a/Master/texmf-dist/source/latex/SIunits/SIunits.dtx b/Master/texmf-dist/source/latex/SIunits/SIunits.dtx
new file mode 100644
index 00000000000..1668cb8f102
--- /dev/null
+++ b/Master/texmf-dist/source/latex/SIunits/SIunits.dtx
@@ -0,0 +1,3166 @@
+% \iffalse meta-comment
+%<*ID>
+%%% ====================================================================
+%%%  @LaTeX-package-file{
+%%% author    = "Heldoorn M.",
+%%% version   = "$Revision: 1.33 $",
+%%% date      = "$Date: 2002/08/01 11:20:00 $",
+%%% filename  = "SIunits.dtx",
+%%% address   = "Marcel Heldoorn
+%%%              Kennedylaan 24
+%%%              NL-3844 BC  HARDERWIJK
+%%%              The Netherlands",
+%%% telephone = "+31 341 427983",
+%%% FAX       = "+31 71 5276782",
+%%% email     = "SIunits@webschool.nl",
+%%% codetable = "ISO/ASCII",
+%%% keywords  = "SI, units, International System of Units,
+%%%              physical unit",
+%%% supported = "yes",
+%%% abstract  = "This package defines commands for using
+%%%              standard SI units in all your texts. The
+%%%              package provides different options for the
+%%%              uniform typesetting and spacing of the units.",
+%%% copyright = "Copyright (C) 2001 Marcel Heldoorn.
+%%%
+%%% This program may be distributed and/or modified under the
+%%% conditions of the LaTeX Project Public License, either version 1.2
+%%% of this license or (at your option) any later version.
+%%% The latest version of this license is in
+%%%   http://www.latex-project.org/lppl.txt
+%%% and version 1.2 or later is part of all distributions of LaTeX
+%%% version 1999/12/01 or later.
+%%% }
+%%% ====================================================================
+%</ID>
+%   \fi
+% \CheckSum{1807}
+%   \iffalse
+%<+package|binary>\def\SIunits@RCS$#1: #2 #3${#2}
+%<+package|binary>\def\filename{SIunits.dtx}%Source File Name
+%<+package|binary>\xdef\fileversion{\SIunits@RCS$Revision: 1.33 $}%Revision generated by CS-RCS
+%<+package|binary>\xdef\filedate{\SIunits@RCS$Date: 2002/08/01 11:20:00 $}%Date generated by CS-RCS
+%<+package|binary>\let\docversion=\fileversion
+%<+package|binary>\let\docdate=\filedate
+%<+package|binary>\NeedsTeXFormat{LaTeX2e}[1997/12/01]
+%<+package>\ProvidesPackage{SIunits}
+%<+binary>\ProvidesPackage{binary}
+%<+package|binary>  [\filedate\space v\fileversion\space
+%<+package>     Support for the International System of units (MH)]
+%<+binary>      Support for binary prefixes and units (MH)]
+%<+binary>\RequirePackageWithOptions{SIunits}
+%<+package|binary> \def\packagemessage{}
+%   \fi
+% \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         \~}
+%   \iffalse
+%<*config>
+%% SIunits configuration file: SIunits.cfg
+%%
+%% You can uncomment one or more of the lines below to set default options.
+%%
+%%\ExecuteOptions{binary}  % Load binary.sty (binary units and prefixes)
+%%
+%% Spacing options (multiplying units):
+%%
+%%\ExecuteOptions{cdot}         % \cdot
+%%\ExecuteOptions{thickspace}   % thick space \;
+%%\ExecuteOptions{mediumspace}  % medium space \:
+%%\ExecuteOptions{thinspace}    % thin space \,
+%%
+%% Spacing options (between quantity and unit):
+%%
+%%\ExecuteOptions{thickqspace}  % thick space \;
+%%\ExecuteOptions{mediumqspace} % medium space \:
+%%\ExecuteOptions{thinqspace}   % thin space \,
+%%
+%% Compatibility options:
+%%
+%%\ExecuteOptions{noams}   % When you don't have the AMS font, eurm10, use this option.
+%%
+%%\ExecuteOptions{amssymb} % prevent amssymb package from defining \square
+%%\ExecuteOptions{squaren} % define \squaren for use with amssymb package
+%%
+%%\ExecuteOptions{pstricks}% prevent pstricks package from defining \gray
+%%\ExecuteOptions{Gray}    % define \Gray for use with pstricks package
+%%
+%%\ExecuteOptions{italian} % define \unita to prevent interference with babel package.
+%%
+%% Misc options:
+%%
+%%\ExecuteOptions{textstyle}% Typeset units in font of context.
+%</config>
+%<*batchfile>
+%
+%
+% (1) run SIunits.ins through TeX to get the package
+% (you get: SIunits.sty, binary.sty, SIunits.cfg and SIunits.cfg)
+%
+% (2) run SIunits.drv through TeX (LaTeX) to get the documentation
+% (you get: SIunits.dvi)
+%
+% [or use DOCSTRIP and extract SIunits.sty from SIunits.dtx
+% using option `package']
+%
+%
+\begin{filecontents}{SIunits.ins}
+%%
+%% SIunits.ins will generate the fast loadable files SIunits.sty and
+%% binary.sty, the documentation driver SIunits.drv and the configura-
+%% tion file SIunits.cfg from the package file SIunits.dtx when run
+%% through LaTeX or TeX.
+%%
+%% Copyright (C) 2001          Marcel Heldoorn
+%%
+%% This program may be distributed and/or modified under the
+%% conditions of the LaTeX Project Public License, either version 1.2
+%% of this license or (at your option) any later version.
+%% The latest version of this license is in
+%%   http://www.latex-project.org/lppl.txt
+%% and version 1.2 or later is part of all distributions of LaTeX
+%% version 1999/12/01 or later.
+%%
+%% NOTE:
+%% The LPPL about .ins files:
+%%    - Files with extension `.ins' (installation files): these files may
+%%  not be modified at all because they contain the legal notices
+%%  that are placed in the generated files.
+%%
+%% --------------- start of docstrip commands ------------------
+%%
+\def\batchfile{SIunits.ins}
+\input docstrip.tex
+\keepsilent
+\preamble
+
+Copyright (c) 1998-2002 Marcel Heldoorn <m.heldoorn@webschool.nl>.
+
+This program may be distributed and/or modified under the conditions of the LaTeX Project
+Public License, either version 1.2 of this license or (at your option) any later version.
+The latest version of this license is in http://www.latex-project.org/lppl.txt and
+version 1.2 or later is part of all distributions of LaTeX version 1999/12/01 or later.
+
+For error reports in case of UNCHANGED versions see the readme.txt file.
+
+Please do not request updates from me directly. Distribution is done through the
+Comprehensive TeX Archive Network (CTAN).
+
+\endpreamble
+\postamble
+
+ Source: $Id: SIunits.dtx,v 1.33 2002/08/01 11:20:00 root Exp root $
+\endpostamble
+\generate{\file{SIunits.sty}{\from{SIunits.dtx}{package}}}
+\generate{\file{binary.sty}{\from{SIunits.dtx}{binary}}}
+\nopreamble
+\generate{\file{SIunits.cfg}{\from{SIunits.dtx}{config}}}
+\generate{\file{SIunits.drv}{\from{SIunits.dtx}{driver}}}
+ \Msg{************************************************************}
+ \Msg{}
+ \Msg{ To finish the installation you have to move the file}
+ \Msg{ `SIunits.sty' (and optionally the file `SIunits.cfg')}
+ \Msg{ into a directory searched by LaTeX.}
+ \Msg{}
+ \Msg{ To type-set the documentation, run the file `SIunits.drv'}
+ \Msg{ through LaTeX.}
+ \Msg{ Process SIunits.idx file by:}
+ \Msg{ \space\space\space\space makeindex -s gind.ist SIunits}
+ \Msg{ Process SIunits.glo file by:}
+ \Msg{ \space\space\space\space makeindex -s gglo.ist -o SIunits.gls SIunits.glo}
+ \Msg{}
+ \Msg{************************************************************}
+\endbatchfile
+\end{filecontents}
+%</batchfile>
+%<*driver>
+\documentclass[a4paper]{ltxdoc}
+\IfFileExists{hyperref.sty} {\usepackage{hyperref}}{\relax}
+ \IfFileExists{SIunits.sty}
+ {\usepackage[derivedinbase,derived,binary]{SIunits}}
+ {\GenericWarning{SIunits.DTX}
+ {Package file SIunits.STY not found!^^J
+ Generate SIunits.STY by (La)TeXing SIunits.INS,
+ process SIunits.DTX again.^^J}\stop}
+%%
+\GetFileInfo{SIunits.dtx}
+\CodelineIndex%
+\PageIndex% Comment out to get code line numbers in index.
+\CodelineNumbered%
+\EnableCrossrefs%
+%%\DisableCrossrefs% UnComment if the index is ready
+\OnlyDescription% Comment out to print Section "The Magic Code" as well.
+%%
+\begin{document}
+\DocInput{SIunits.dtx}
+ {\newpage\PrintIndex}
+ {\newpage\PrintChanges}
+\end{document}
+%</driver>
+%    \fi
+%    \setlength\hfuzz{1000pt}
+%    \setlength\overfullrule{1000pt}
+%
+%    \newcommand{\pkgname}[1]{\texttt{#1}}
+%    \newcommand{\opt}[1]{\textsf{#1}}
+%
+%    \newenvironment{labeling}[1]
+%     {\list{}{\settowidth{\labelwidth}{\textbf{#1}}
+%     \leftmargin\labelwidth\advance\leftmargin\labelsep
+%     \def\makelabel##1{\textbf{##1}\hfil}}}{\endlist}
+%
+%    \newcommand{\Fe}{\textit{For example:\ }}
+%    \newcommand{\fe}{\textit{for example:\ }}
+%    \newcommand{\dimn}[1]{\ensuremath{\mathsf{#1}}}
+%
+%    \def\digitsep{\,}
+%    \def\onedigit#1{#1}
+%    \def\twodigit#1#2{#1#2}
+%    \def\threedigit#1#2#3{#1#2#3}
+%    \def\fourdigit#1#2#3#4{#1\digitsep#2#3#4}
+%    \def\fivedigit#1#2#3#4#5{#1#2\digitsep#3#4#5}
+%    \def\sixdigit#1#2#3#4#5#6{#1#2#3\digitsep#4#5#6}
+%    \def\sevendigit#1#2#3#4#5#6#7{#1\digitsep#2#3#4\digitsep#5#6#7}
+%    \def\eightdigit#1#2#3#4#5#6#7#8{#1#2\digitsep#3#4#5\digitsep#6#7#8}
+%    \def\ninedigit#1#2#3#4#5#6#7#8#9{#1#2#3\digitsep#4#5#6\digitsep#7#8#9}
+%    \def\ifourdigit#1#2#3#4{#1#2#3\digitsep#4}
+%    \def\ifivedigit#1#2#3#4#5{#1#2#3\digitsep#4#5}
+%    \def\isixdigit#1#2#3#4#5#6{#1#2#3\digitsep#4#5#6}
+%    \def\isevendigit#1#2#3#4#5#6#7{#1#2#3\digitsep#4#5#6\digitsep#7}
+%    \def\ieightdigit#1#2#3#4#5#6#7#8{#1#2#3\digitsep#4#5#6\digitsep#7#8}
+%    \def\ininedigit#1#2#3#4#5#6#7#8#9{#1#2#3\digitsep#4#5#6\digitsep#7#8#9}
+%
+%    \def\getlength#1{\ifx#1\end \let\next=\relax
+%      \else\advance\count0 by 1 \let\next=\getlength\fi \next}
+%
+%    \def\length#1{\count0=0 \getlength#1\end}
+%
+%    \def\digitspart#1{\length{#1}\ifcase\count0\or
+%                        \let\next=\onedigit \or
+%                        \let\next=\twodigit \or
+%                        \let\next=\threedigit \or
+%                        \let\next=\ifourdigit \or
+%                        \let\next=\ifivedigit \or
+%                        \let\next=\isixdigit \or
+%                        \let\next=\isevendigit \or
+%                        \let\next=\ieightdigit \or
+%                        \let\next=\ininedigit \or
+%                        \else \let\next=\relax \fi \next#1}
+%
+%    \def\integerpart#1{{\length{#1}\ifcase\count0\or
+%                      \let\next=\onedigit \or
+%                      \let\next=\twodigit \or
+%                      \let\next=\threedigit \or
+%                      \let\next=\fourdigit \or
+%                      \let\next=\fivedigit \or
+%                      \let\next=\sixdigit \or
+%                      \let\next=\sevendigit \or
+%                      \let\next=\eightdigit \or
+%                      \let\next=\ninedigit \or
+%                      \else \let\next=\relax \fi \next#1}}
+%
+%    \def\split#1.#2\end{\ensuremath{\integerpart{#1}.\digitspart{#2}}}
+%
+%    \newcommand{\nmfmt}[1]{{\split #1\end}}
+%    \newcommand{\intfmt}[1]{\ensuremath{\integerpart{#1}}}
+%
+%    \def\scientificnotation#1e#2\end{\ensuremath{{#1}\times 10^{#2}}}
+%    \newcommand{\sci}[1]{{\scientificnotation #1\end}}
+%    \newcommand{\joenit}[1]{\begingroup\mathcode`\.="8000 \ensuremath{#1}\endgroup}
+%
+%    \changes{v0.05 Final Release}{1999/03/30}{Release v0.05 under LaTeX Project Public License}
+%    \changes{v0.05 Beta 2}{1999/03/30}{First package release under LaTeX Project Public License}
+%    \changes{v0.06 Beta  2}{1998/04/07}{Problem with amssymb package solved thanks to Timothy C. Burt}
+%    \changes{v0.03 Final Release}{1999/01/15}{Release v0.03}
+%    \changes{v0.03 Beta  6}{1998/12/15}{Stable version, before releasing v0.03}
+%    \changes{v0.03 Beta  4}{1998/12/10}{Stable version, before adding configuration file parameters}
+%    \changes{v0.02 Beta  5}{1998/09/23}{Generated for Timothy C. Burt (\texttt{tcburt@comp.uark.edu})}
+%    \changes{v0.02 Beta  4}{1998/09/15}{Typos corrected (thanks to Rafael Rodriguez Pappalardo)}
+%    \changes{v0.02 Beta  3}{1998/09/11}{Code documentation checked and corrected}
+%    \changes{v0.01}{1998/09/07}{Small documentation errors (thanks to Juergen von Haegen)}
+%    \changes{v0.00 Beta 4}{1998/08/14}{Inconsistencies removed/changed}
+%    \changes{v0.00 Beta 3}{1998/08/11}{Options implemented; better documentation}
+%    \changes{v0.00 Beta 2}{1998/07/30}{Various small improvements}
+%    \changes{v0.00 Beta 1}{1998/07/24}{Initial working version}
+%    \changes{v1.00}{2000/03/21}{released as SIunits v1.00}
+%    \changes{v1.13}{2000/08/29}{implementation of \textit{SI-brochure Supplement 2000}}
+%    \changes{v1.15}{2001/02/01}{E-mail address change: \texttt{marcel.heldoorn@webschool.nl}}
+%    \changes{v1.30}{2002/08/01}{E-mail address change: \texttt{SIunits@webschool.nl}}
+%    \changes{v1.32}{2002/08/01}{\texttt{hyperref} package used in documentation driver}
+%
+%  \DoNotIndex{\,,\:,\;}
+%  \DoNotIndex{\@defGrayfalse,\@defGraytrue,\@defsquarenfalse,\@defsquarentrue}
+%  \DoNotIndex{\@elt,\@for}
+%  \DoNotIndex{\@ifundefined,\@nameuse,\@ne,\@optionNoAMSfalse,\@optionNoAMStrue  }
+%  \DoNotIndex{\@optionNoAMSfalse\@optionNoAMStrue\@optionbinaryfalse\@optionbinarytrue}
+%  \DoNotIndex{\@qsk,\@qskwidth,\@redefGrayfalse,\@redefGraytrue}
+%  \DoNotIndex{\@redefsquarefalse,\@redefsquaretrue,\@scientificfalse,\@scientifictrue}
+%  \DoNotIndex{\@stpelt,\@text,\@text@,\@textstylefalse,\@textstyletrue}
+%  \DoNotIndex{\AA,\addtocounter,\def,\edef,\gdef}
+%  \DoNotIndex{\amperemetresecond,\amperepermetre,\amperepermetrenp,\amperepersquaremetre,\amperepersquaremetrenp}
+%  \DoNotIndex{\arad}
+%  \DoNotIndex{\AtBeginDocument,\AtEndOfPackage}
+%  \DoNotIndex{\begingroup}
+%  \DoNotIndex{\candelapersquaremetre,\candelapersquaremetrenp,\cdot}
+%  \DoNotIndex{\check@mathfonts,\circ}
+%  \DoNotIndex{\coulombpercubicmetre,\coulombpercubicmetrenp,\coulombperkilogram,\coulombperkilogramnp}
+%  \DoNotIndex{\coulombpermol,\coulombpermolnp,\coulombpersquaremetre,\coulombpersquaremetrenp,\csname}
+%  \DoNotIndex{\cubicmetreperkilogram,\cubicmetrepersecond,\CurrentOption}
+%  \DoNotIndex{\decimals,\DeclareFontEncoding,\DeclareFontFamily}
+%  \DoNotIndex{\DeclareFontShape,\DeclareFontSubstitution,\DeclareMathSymbol}
+%  \DoNotIndex{\DeclareOption,\DeclareRobustCommand,\DeclareSymbolFont,\DeclareTextSymbol}
+%  \DoNotIndex{\DeclareTextSymbolDefault}
+%  \DoNotIndex{\def,\displaystyle,\do}
+%  \DoNotIndex{\else,\csname,\endcsname,\begingroup,\endgroup,\endinput,\ensuremath,\advancemath,\bgroup}
+%  \DoNotIndex{\egroup,\everymath}
+%  \DoNotIndex{\ExecuteOptions,\expandafter,\f@size}
+%  \DoNotIndex{\faradpermetre,\faradpermetrenp,\fi,\filedate,\fileversion,\firstchoice@false,\firstchoice@true,\font}
+%  \DoNotIndex{\graypersecond,\graypersecondnp,\hbox,\henrypermetre,\henrypermetrenp,\hspace}
+%  \DoNotIndex{\if@defGray,\if@defsquaren,\if@optionbinary,\if@optionNoAMS,\if@redefGray,\if@redefsquare}
+%  \DoNotIndex{\if@scientific,\if@textstyle,\iffirstchoice@,\ifmmode,\ifundefined,\InputIfFileExists}
+%  \DoNotIndex{\joulepercubicmetre,\joulepercubicmetrenp,\jouleperkelvin,\jouleperkelvinnp}
+%  \DoNotIndex{\jouleperkilogram,\jouleperkilogramkelvin,\jouleperkilogramkelvinnp,\jouleperkilogramnp}
+%  \DoNotIndex{\joulepermole,\joulepermolekelvin,\joulepermolekelvinnp,\joulepermolenp,\joulepersquaremetre}
+%  \DoNotIndex{\joulepersquaremetrenp,\joulepertesla,\jouleperteslanp}
+%  \DoNotIndex{\kilogrammetrepersecond,\kilogrammetrepersecondnp,\kilogrammetrepersquaresecond}
+%  \DoNotIndex{\kilogrammetrepersquaresecondnp,\kilogrampercubicmetre,\kilogrampercubicmetrecoulomb}
+%  \DoNotIndex{\kilogrampercubicmetrecoulombnp,\kilogrampercubicmetrenp,\kilogramperkilomole}
+%  \DoNotIndex{\kilogramperkilomolenp,\kilogrampermetre,\kilogrampermetrenp,\kilogrampersecond}
+%  \DoNotIndex{\kilogrampersecondcubicmetre,\kilogrampersecondcubicmetrenp,\kilogrampersecondnp}
+%  \DoNotIndex{\kilogrampersquaremetre,\kilogrampersquaremetrenp,\kilogrampersquaremetresecond}
+%  \DoNotIndex{\kilogrampersquaremetresecondnp,\kilogramsquaremetre,\kilogramsquaremetrenp}
+%  \DoNotIndex{\kilogramsquaremetrepersecond,\kilogramsquaremetrepersecondnp,\let}
+%  \DoNotIndex{\mathcode,\mathchoice,\mathord,\mathrm,\mbox}
+%  \DoNotIndex{\MessageBreak,\metrepersecond,\metrepersecondnp,\metrepersquaresecond,\metrepersquaresecondnp}
+%  \DoNotIndex{\molepercubicmetre,\molepercubicmetrenp,\NeedsTeXFormat,\newcommand}
+%  \DoNotIndex{\newif,\newlength}
+%  \DoNotIndex{\newtonmetrenp,\newtonpercubicmetre,\newtonpercubicmetrenp}
+%  \DoNotIndex{\newtonperkilogram,\newtonperkilogramnp,\newtonpermetre}
+%  \DoNotIndex{\newtonpermetrenp,\newtonpersquaremetre,\newtonpersquaremetrenp}
+%  \DoNotIndex{\nfss@text,\no@qsk,\ohmmetre,\Omega}
+%  \DoNotIndex{\PackageError,\packagemessage,\packagename}
+%  \DoNotIndex{\PackageWarning,\PackageWarningNoLine,\persquaremetresecond,\period@active}
+%  \DoNotIndex{\persquaremetresecondnp,\Prefixes,\ProcessOptions,\protect,\providecommand}
+%  \DoNotIndex{\ProvidesPackage,\quantityskip,\radianpersecond,\radianpersecondnp}
+%  \DoNotIndex{\radianpersquaresecond,\radianpersquaresecondnp}
+%  \DoNotIndex{\relax,\renewcommand,\RequirePackage,\RequirePackageWithOptions}
+%  \DoNotIndex{\rpcubicmetreperkilogram,\rpcubicmetrepersecond,\rperminute,\rpfourth}
+%  \DoNotIndex{\rpsquare,\rpsquared,\rpsquaremetreperkilogram}
+%  \DoNotIndex{\selectfont,\settowidth,\sf@size,\SI@fstyle}
+%  \DoNotIndex{\SIunits@@,\SIunits@execopt,\SIunits@opt@cdot,\SIunits@opt@derived}
+%  \DoNotIndex{\SIunits@opt@derivedinbase,\SIunits@opt@mediumqspace,\SIunits@opt@mediumspace}
+%  \DoNotIndex{\SIunits@opt@thickqspace,\SIunits@opt@thickspace,\SIunits@opt@thinqspace}
+%  \DoNotIndex{\SIunits@opt@thinspace,\skewchar,\space}
+%  \DoNotIndex{\squaremetrepercubicmetre,\squaremetrepercubicmetrenp,\squaremetrepercubicsecond}
+%  \DoNotIndex{\squaremetrepercubicsecondnp,\squaremetreperkilogram,\squaremetrepernewtonsecond}
+%  \DoNotIndex{\squaremetrepernewtonsecondnp,\squaremetrepersecond,\squaremetrepersecondnp}
+%  \DoNotIndex{\squaremetrepersquaresecond,\squaremetrepersquaresecondnp,,\ssf@size}
+%  \DoNotIndex{\stepcounter,\symbols,\textdef@,\textstyle,\tf@size,\typeout}
+%  \DoNotIndex{\voltpermetre,\voltpermetrenp,\wattpercubicmetre,\wattpercubicmetrenp}
+%  \DoNotIndex{\wattperkilogram,\wattperkilogramnp,\wattpermetrekelvin,\wattpermetrekelvinnp}
+%  \DoNotIndex{\wattpersquaremetre,\wattpersquaremetrenp,\wattpersquaremetresteradian}
+%  \DoNotIndex{\wattpersquaremetresteradiannp}
+%
+%\GetFileInfo{SIunits.sty}
+%    \changes{\fileversion}{\filedate}{Current version submitted to CTAN}
+%\title{The \pkgname{SIunits}\ package\thanks{This file has version number \fileversion{}, last revised
+%\filedate{} \packagemessage}\\{\large support for the \textsf{International System of Units}}}
+%\author{Marcel Heldoorn\thanks{Mail: Kennedylaan 24, NL-3844~BC Harderwijk, The~Netherlands}\\
+%\texttt{SIunits@webschool.nl}}
+%\date{File date \filedate{} ---  Printed \today}
+%\maketitle
+%
+%\begin{abstract}
+%\noindent This article describes the \pkgname{SIunits}\ package that provides support for
+%the \textsf{Syst\`{e}me International d'Unit\'{e}s} (SI).
+%
+%The Syst\`{e}me International d'Unit\'{e}s (SI), the modern form of the metric system, is the
+%most widely used system of units and measures around the world. But despite this there is
+%widespread misuse of the system with incorrect names and symbols used as a matter a
+%course - even by well educated and trained people who should know better. For example how
+%often do we see: \milli\hertz, \mega hz or \milli hz written when referring to computer
+%clock rates? The correct form is actually \mega\hertz. Note that the capitalisation does
+%matter.
+%
+%Hence, a clear system for the use of units is needed, satisfying the next principles:
+%\begin{enumerate}
+%\item the system should consist of measuring units based on unvariable quantities in nature;
+%\item all units other than the base units should be derived from these base units; and
+%\item multiples and submultiples of the units should be decimal.
+%\end{enumerate}
+%The name Syst\`{e}me International d'Unit\'{e}s (International System of Units) with the
+%international abbreviation SI was adopted by the Conf\'{e}rence G\'{e}n\'{e}rale des Poids et Mesures
+%(CGPM) in 1960. It is a coherent system based on seven base units (CGPM 1960 and 1971).
+%
+%
+%The \pkgname{SIunits}\ package can be used to standardise the use of units in your
+%writings. Most macros are easily adaptable to personal preferences. However, you are
+%welcome (and strongly invited\footnote{There is an enormous \LaTeX\ Knowledge Base out
+%there.}) to suggest any improvements. \\*[3mm] {\itshape Enjoy the \pkgname{SIunits}\
+%package!\raisebox{-\baselineskip}[0pt][0pt]{marcel h.}}
+%\end{abstract}
+%\newpage
+%\section*{What's new?}
+%\subsubsection*{New in version~\fileversion{}}
+%\begin{enumerate}
+%\item Adaptive spacing of |\degree|, |\paminute|, |\arcminute|, |\pasecond| and |\arcsecond|: no space between quantity and unit.
+%\item Solved bug: extra space in ready to use ready-to-use units when using \opt{textstyle} option. Thanks to Svend Tollak Munkejord.
+%\item Option \opt{italian} added to solve interference problem with the babel package and language italian: Babel defines |\unit|. When using the option \opt{italian}, use |\unita| instead.  Thanks to Lorenzo Cappelletti and Luca Rossato.
+%\end{enumerate}
+%\subsubsection*{New in version~1.\textit{x}}
+%\begin{enumerate}
+%\item \pkgname{binary.sty} style with binary prefixes and units added (see table~\ref{table:bipre});
+%\item \pkgname{binary.sty} can be loaded by using the \opt{binary} package option (see page~\pageref{sec:options});
+%\item unit \cmd{\one} added: the derived unit for a derived quantity of dimension one is also the number one;
+%\item In the |pstricks| package the command |\gray| is defined. This will cause error messages
+%when the |pstricks| package is used in combination with the \pkgname{SIunits}\ package. To prevent
+%errors one can choose two different options:
+%\begin{labeling}{\hspace{15mm}}
+%\item[\opt{pstricks}]This option redefines the \texttt{pstricks} command |\gray| to get the desired
+%\pkgname{SIunits}\ definition of the command.\\ \textbf{Note: }When using this option, the \texttt{pstricks} command
+%|\gray| is \textbf{redefined}.
+%\item[\opt{Gray}]This option defines a new command |\Gray| that can be used instead of the
+%\pkgname{SIunits}\ command |\gray|.\\ \textbf{Note: }When using this option,
+%|\gray| is defined in the \texttt{pstricks} package.
+%\end{labeling}
+%\item   When using the option \opt{textstyle} units are printed in the typeface of the
+%enclosing text, automatically.
+%\item the . (period) was made active in the second argument of the \cmd{\unit} macro: it will act like a unit skip
+%(\cmd{\usk}), \fe  use |\unit{1}{\newton.\metre}| instead of |\unit{1}{\newton\usk\metre}|.
+%\item \cmd{\katal} added: ``\textit{The 21st Conf\'{e}rence G\'{e}n\'{e}rale des Poids et Mesures decides to adopt the special name katal,
+%   symbol \katal, for the SI unit mole per second to express catalytic activity, especially
+%   in the fields of medicine and biochemistry, ...}" (21th CGPM (1999), Resolution 12).
+%\item The ready-to-use units used \cmd{\square} instead of \cmd{\squaren} when using the option \opt{squaren}. \textsf{Fixed!}
+%\item Fixed index and change history generation error.
+%\item Documentation update: implementation of \textit{SI-brochure Supplement 2000}.
+%\item Documentation updated/corrected: table heads.
+%\item E-mail changed: \texttt{SIunits@webschool.nl}
+%\item Solved bug: Defining units using |\addunit| in combination with the \opt{cdot} and \opt{textstyle} options. Thanks to Michael M\"{u}ller.
+%\end{enumerate}
+%\newpage\tableofcontents\newpage
+%\section{Introduction}
+%
+%\subsection{Historical notes}
+%In 1948 the 9th General Conference on Weights and Measures (CGPM\footnote{See section
+%\ref{acronyms} for acronyms}), by its Resolution 6, instructed the International
+%Committee for Weights and Measures (CIPM\footnotemark[\value{footnote}]):
+%\begin{verse}
+%`to study the establishment of a complete set of rules for units of measurement';
+%
+%`to find out for this purpose, by official inquiry, the opinion prevailing in scientific,
+%technical, and educational circles in all countries'; and
+%
+%`to make recommendations on the establishment of a \textit{practical system of units of
+%measurement} suitable for adoption by all signatories to the Meter Convention.'
+%\end{verse}
+%
+%The same General Conference also laid down, by its Resolution 7, general principles for
+%unit symbols and also gave a list of units with special names.
+%
+%
+%The 10th CGPM (1954), by its Resolution 6, and the 14th CGPM (1971), by its Resolution 3,
+%adopted as base units of this `practical system of units,' the units of the following
+%seven quantities: length, mass, time, electric current, thermodynamic temperature, amount
+%of substance, and luminous intensity.
+%
+%
+%The 11th CGPM (1960), by its Resolution 12, adopted the name \textit{Syst\`{e}me
+%International d'Unit\'{e}s (International System of Units)}, with the international
+%abbreviation \textit{SI}, for this practical system of units of measurement, and laid
+%down rules for the prefixes, the derived and supplementary units, and other matters, thus
+%establishing a comprehensive specification for units of measurement.
+%
+%\subsection{The classes of SI units}
+%The General Conference decided to base the International
+%System on a choice of seven well-defined units which by convention are regarded as
+%dimensionally independent: the metre, the kilogram, the second, the ampere, the kelvin,
+%the mole, and the candela. These units are called \textit{base units}.
+%
+%
+%The second class of SI units contain \textit{derived units}, i.\,e., units that can be
+%formed by combining base units according to the algebraic relations linking the
+%corresponding quantities. The names and symbols of some units thus formed in terms of
+%base units can be replaced by special names and symbols which can themselves be used to
+%form expressions and symbols of other derived units (see section \ref{derived}, p.
+%\pageref{derived}).
+%
+%
+%The 11th CGPM (1960) admitted a third class of SI units, called \textit{supplementary
+%units} and containing the SI units of plane and solid angle.
+%
+%
+%The 20th CGPM (1995) decided to eliminate the class of supplementary units as a separate
+%class in the SI. Thus the SI now consists of only two classes of units: base units and
+%derived units, with the radian and the steradian, which are the two supplementary units,
+%subsumed into the class of derived SI units.
+%
+%
+%\subsection{The SI prefixes}
+%The General Conference has adopted a series of prefixes to be used in forming the decimal
+%multiples and submultiples of SI units. Following CIPM Recommendation~1 (1969), the set
+%of prefixes is designated by the name \textit{SI prefixes}.
+%
+%The multiples and submultiples of SI units, which are formed by using the SI prefixes,
+%should be designated by their complete name, \textit{multiples and submultiples of SI
+%units}, in order to make a distinction between them and the coherent set of SI units
+%proper.
+%
+%\subsection{Acronyms}
+%\label{acronyms} The SI was established in 1960 by the CGPM. The CGPM is an
+%intergovernmental treaty organisation created by a diplomatic treaty called the Meter
+%Convention (\textit{Convention du M\`{e}tre}, often called the Treaty of the Meter in the
+%United States). The Meter Convention was signed in Paris in 1875 by representatives of
+%seventeen nations, including the United States. There are now forty-eight Member States,
+%including all the major industrialised countries. The Convention, modified slightly in
+%1921, remains the basis of all international agreement on units of measurement.
+%
+%The Meter Convention also created the International Bureau of Weights and Measures (BIPM,
+%Bureau International des Poids et Mesures) and the International Committee for Weights
+%and Measures (CIPM, Comit\'{e} International des Poids et Mesures). The BIPM, which is
+%located in S\`{e}vres, a suburb of Paris, France, and which has the task of ensuring
+%worldwide unification of physical measurements, operates under the exclusive supervision
+%of the CIPM, which itself comes under the authority of the CGPM.
+%
+%
+%
+%\begin{description}
+%\item[CGPM] General Conference on Weights and Measures (\textit{Conf\'{e}rence G\'{e}n\'{e}rale des Poids
+%et Mesures}). The CGPM is the primary intergovernmental treaty organisation responsible
+%for the SI, representing nearly 50 countries. It has the responsibility of ensuring that
+%the SI is widely disseminated and modifying it as necessary so that it reflects the
+%latest advances in science and technology.
+%
+%\item[CIPM] International Committee for Weights and Measures (\textit{Comit\'{e} International des
+%Poids et Mesures}). The CIPM comes under the authority of the CGPM. It suggests
+%modifications to the SI to the CGPM for formal adoption. The CIPM may also on its own
+%authority pass clarifying resolutions and recommendations regarding the SI.
+%
+%\item[BIPM] International Bureau of Weights and Measures (\textit{Bureau International des
+%Poids et Mesures}). The BIPM, located outside Paris, has the task of ensuring worldwide
+%unification of physical measurements. It is the ``international" metrology institute, and
+%operates under the exclusive supervision of the CIPM.
+%\end{description}
+%
+%\subsection{Some useful definitions}
+%\begin{description}
+%\item [quantity in the general sense] A quantity in the general sense is a property ascribed to phenomena, bodies, or
+%substances that can be quantified for, or assigned to, a particular phenomenon, body, or
+%substance. Examples are mass and electric charge.
+%\item [quantity in the particular sense] A quantity in the particular sense is a quantifiable or assignable property ascribed
+%to a particular phenomenon, body, or substance. Examples are the mass of the moon and the
+%electric charge of the proton.
+%\item [physical quantity] A physical quantity is a quantity that can be used in the mathematical equations of
+%science and technology.
+%\item [unit] A unit is a particular physical quantity, defined and adopted by convention, with
+%which other particular quantities of the same kind are compared to express their value.
+%\end{description}
+%
+%
+%\noindent The \textbf{value of a physical quantity} is the quantitative expression of a
+%particular physical quantity as the product of a number and a unit, the number being its
+%numerical value. Thus, the numerical value of a particular physical quantity depends on
+%the unit in which it is expressed.
+%
+%\label{celsiusexample}
+%More formally, the value of quantity \(A\) can be written as \(A=\lbrace A\rbrace [A]\),
+%where \(\{A\}\) is the numerical value of \(A\) when \(A\) is expressed in the unit
+%\([A]\). The numerical value can therefore be written as \(\lbrace A\rbrace=A/[A]\),
+%which is a convenient form for use in figures and tables. Thus to eliminate the
+%possibility of misunderstanding, an axis of a graph or the heading of a column of a table
+%can be labelled `\(t\)\per\celsius' instead of `\(t\)(\celsius)' or `Temperature
+%(\celsius)'. Similarly, another example: `\(E/\)(\voltpermetre)' instead of
+%`\(E\)(\voltpermetre)' or `Electric field strength (\voltpermetre)'.
+%
+%\addunit{\foot}{ft}
+%\Fe the value of the height \(h_{W}\) of the Washington Monument is \(h_{W} = \unit{169}{\metre}=
+%\unit{555}{\foot}\)\footnote{foot (\foot) is not part of the SI units}. Here \(h_{W}\) is the physical quantity, its value expressed in the
+%unit metre, unit symbol \metre, is \unit{169}{\metre}, and its numerical value when
+%expressed in metres is \(169\).
+%
+%\section{SI units}
+%\subsection{SI base units}
+%\subsubsection{Definitions}
+%The SI is founded on seven SI base units for seven base quantities assumed to be mutually
+%independent. The primary definitions of the SI base units are in French. Their current
+%definitions, along with an English translation, are given below:
+%\paragraph*{metre; \textit{m\`{e}tre}}
+%\begin{description}
+%\item[]
+%\frenchspacing\textit{Le m\`{e}tre est la longueur du trajet parcouru dans le vide par la lumi\`{e}re pendant
+%une dur\'{e}e de \(1/\intfmt{299792458}\) de seconde.}\\ {(17th CGPM (1983), Resolution 1).}\nonfrenchspacing
+%\item[]
+%{The metre is the length of the path travelled by light in vacuum during a time interval
+%of \(1/\intfmt{299792458}\) of a second.}
+%\end{description}
+%\paragraph*{kilogram; \textit{kilogramme}}
+%\begin{description}
+%\item[]
+%\frenchspacing\textit{Le kilogramme est l'unit\'{e} de masse; il est \'{e}gal \`{a} la masse du prototype
+%international du kilogramme.}\\ (1st CGPM (1889) and 3rd CGPM (1901)).\nonfrenchspacing
+%\item[]
+%{The kilogram is the unit of mass; it is equal to the mass of the international prototype
+%of the kilogram.} \\{\textit{Note}: This international prototype is made of
+%platinum-iridium and is kept at the International Bureau of Weights and Measures, S\`{e}vres,
+%France.}
+%\end{description}
+%\paragraph*{second; \textit{seconde}}
+%\begin{description}
+%\item[]
+%\frenchspacing\textit{La seconde est la dur\'{e}e de \(9\digitsep192\digitsep631\digitsep770\) p\'{e}riodes de
+%la radiation correspondant \`{a} la transition entre les deux niveaux hyperfins de l'\'{e}tat
+%fondamental de l'atome de cesium 133.} \\(13th CGPM (1967), Resolution 1).\nonfrenchspacing
+%\item[]
+%{The second is the duration of \(9\digitsep192\digitsep631\digitsep770\) periods of the
+%radiation corresponding to the transition between the two hyperfine levels of the ground
+%state of the cesium-\(133\) atom.}
+%\end{description}
+%\textit{Note}: This definition refers to a caesium atom at rest at a temperature of \unit{0}{\kelvin}.
+%\paragraph*{ampere; \textit{amp\`{e}re}}
+%\begin{description}
+%\item[]
+%\frenchspacing\textit{L'amp\`{e}re est l'intensit\'{e} d'un courant constant qui, maintenu dans deux
+%conducteurs parall\`{e}les, rectilignes, de longueur infinie, de section circulaire
+%n\'{e}gligeable, et plac\'{e}s \`{a} une distance de 1 m\`{e}tre l'un de l'autre dans le vide, produirait
+%entre ces conducteurs une force \'{e}gale \`{a} \(\sci{2e-7}\) newton par m\`{e}tre de longueur.}\\
+%(9th CGPM (1948), Resolutions 2 and 7).\nonfrenchspacing
+%\item[]
+%{The ampere is that constant current which, if maintained in two straight parallel
+%conductors of infinite length, of negligible circular cross-section, and placed 1 metre
+%apart in vacuum, would produce between these conductors a force equal to \(\sci{2e-7}\)
+%newton per metre of length.}
+%\end{description}
+%\paragraph*{kelvin; \textit{kelvin}}
+%\begin{description}
+%\item[]
+%\frenchspacing\textit{Le kelvin, unit\'{e} de temp\'{e}rature thermodynamique, est la fraction \(1/273.16\) de
+%la temp\'{e}rature thermodynamique du point triple de l'eau.}\\(13th CGPM (1967), Resolution
+%4).\nonfrenchspacing
+%\item[]
+%{The kelvin, unit of thermodynamic temperature, is the fraction \(1/273.16\) of the
+%thermodynamic temperature of the triple point of water.}
+%\end{description}
+%\textit{Note}: The 13th CGPM (1967, Resolution 3) also decided that the unit kelvin
+%and its symbol \kelvin\ should be used to express
+%both thermodynamic temperature and an interval or a difference of temperature, instead of
+%`degree Kelvin' with symbol \degree\kelvin.
+%
+%
+%In addition to the thermodynamic temperature (symbol \(T\)) there is also the Celsius
+%(symbol \(t\)) defined by the equation \(t= T-T_{0}\) where \(T_{0}=\)
+%\unit{273.15}{\kelvin}. Celsius temperature is expressed in degree Celsius; \textit{degr\'{e}
+%Celsius} (symbol \celsius). The unit `degree Celsius' is equal to the unit
+%`kelvin'; in this case, `degree Celsius' is a special name used in place of `kelvin'. A
+%temperature interval or difference of Celsius temperature can, however, be expressed in
+%kelvins as well as in degrees Celsius.
+%
+%\paragraph*{mole; \textit{mole}}
+%\begin{description}
+%\item[]
+%\frenchspacing\textit{1°. La mole est la quantit\'{e} de mati\`{e}re d'un syst\`{e}me contenant autant d'entit\'{e}s
+%\'{e}l\'{e}mentaires qu'il y a d'atomes dans \(0,012\) kilogramme de carbone \(12\).}
+%\item[]
+%\textit{2°. Lorsqu'on emploie la mole, les entit\'{e}s \'{e}l\'{e}mentaires doivent \^{e}tre sp\'{e}cifi\'{e}es
+%et peuvent \^{e}tre des atomes, des mol\'{e}cules, des ions, des \'{e}lectrons, d'autres particules
+%ou des groupements sp\'{e}cifi\'{e}s de telles particules.}\\ (14th CGPM (1971), Resolution 3).\nonfrenchspacing
+%\item[]
+%{1. The mole is the amount of substance of a system which contains as many elementary
+%entities as there are atoms in \(0.012\) kilogram of carbon \(12\).}
+%\item[]
+%{2. When the mole is used, the elementary entities must be specified and may be atoms,
+%molecules, ions, electrons, other particles or specified groups of such
+%particle.}
+%\end{description}
+%\textit{Note}: In this definition, it is understood that the carbon 12 atoms
+%are unbound, at rest and in their ground state.
+%\paragraph*{candela; \textit{candela}}
+%\begin{description}
+%\item[]
+%\frenchspacing\textit{La candela est l'intensit\'{e} lumineuse, dans une direction donn\'{e}e, d'une source qui
+%\'{e}met une radiation monochromatique de fr\'{e}quence \(\sci{540e12}\) hertz et dont
+%l'intensit\'{e} \'{e}nerg\'{e}tique dans cette direction est \(1/683\) watt par st\'{e}radian.}\\ (16th
+%CGPM (1979), Resolution 3).\nonfrenchspacing
+%\item[]
+%{The candela is the luminous intensity, in a given direction, of a source that emits
+%monochromatic radiation of a frequency \(\sci{540e12}\) hertz and has a radiant intensity
+%in that direction of \(1/683\) watt per steradian.}
+%\end{description}
+%\newpage
+%\subsubsection{Symbols}
+%The base units of the International System are collected in table~\ref{table:base} with
+%their names and their symbols (10th CGPM (1954), Resolution 6; 11th CGPM (1960),
+%Resolution 12; 13th CGPM (1967), Resolution 3; 14th CGPM (1971), Resolution 3).\\
+% \begin{table}[btp]
+%   \caption{--- SI base units ---}\label{table:base}
+%   \centering
+% \begin{tabular}{llc}\hline
+%   \textbf{Quantity}           & \textbf{Name} & \textbf{Symbol} \\ \hline
+%   length                      & metre         & \metre      \\
+%   mass                        & kilogram      & \kilogram      \\
+%   time                        & second        & \second     \\
+%   electric current            & ampere        & \ampere     \\
+%   thermodynamic temperature   & kelvin        & \kelvin         \\
+%   amount of substance         & mole          & \mole      \\
+%   luminous intensity          & candela       & \candela    \\ \hline
+% \end{tabular}
+% \end{table}
+%
+%\subsection{SI derived units}\label{derived}
+%Derived units are units which may be expressed in terms of base units by means of the
+%mathematical symbols of multiplication and division. Certain derived units have been
+%given special names and symbols, and these special names and symbols may themselves be
+%used in combination with those for base and other derived units to express the units of
+%other quantities.
+%\subsubsection{Units expressed in terms of base units}
+%Table~\ref{table:derived1} lists some examples of derived units expressed directly in
+%terms of base units. The derived units are obtained by multiplication and division of
+%base units.
+%   \begin{table}[btp]
+%     \caption{--- Examples of SI derived units ---}\label{table:derived1}
+%   \begin{minipage}[]{\textwidth}
+%     \centering
+%   \begin{tabular}{llc}\hline
+%     \textbf{Derived quantity}       & \textbf{Name}         &   \textbf{Symbol}\\ \hline
+%   area       &  square metre    &   \squaremetre   \\
+%   volume     &  cubic metre     &   \cubicmetre     \\
+%   speed, velocity    &  metre per second        &   \metrepersecond\\
+%   acceleration       &  metre per second squared    &   \metrepersquaresecond  \\
+%   wave number &  reciprocal metre   &   \reciprocal\metre   \\
+%   mass density       &  kilogram per cubic metre    &   \kilogrampercubicmetre     \\
+%   specific volume    &  cubic metre per kilogram    &   \cubicmetreperkilogram     \\
+%   current density    &  ampere per square metre     &   \amperepersquaremetre  \\
+%   magnetic field strength    &  ampere per metre    &   \amperepermetre       \\
+%   amount-of-substance concentration      &  mole per cubic metre    &   \mole\per\cubicmetre    \\
+%   luminance          &  candela per square metre    &   \candelapersquaremetre     \\
+%   mass fraction      &  kilogram per kilogram   &   \kilogram\per\kilogram\footnote{the symbol 1
+%   for quantities of dimension 1 such as mass fraction is generally omitted.} \\
+%   \end{tabular}
+%   \end{minipage}
+%   \end{table}
+%
+%\subsubsection{SI derived units with special names and symbols}For ease of understanding and
+%convenience, 21 SI derived units have been given special names and symbols, as shown in
+%table~\ref{table:derived2}. They may themselves be used to express other derived units.
+%   \begin{table}[btp]
+%     \caption{--- SI derived units with special names and symbols ---}\label{table:derived2}
+%   \begin{minipage}[]{\textwidth}\renewcommand{\thefootnote}{\textit{\alph{footnote}}}
+%     \centering
+%   \begin{tabular}{llll}\hline
+%   \textbf{Name} &  \textbf{Expression in} & \textbf{Symbol} & \textbf{Expression in} \\
+%     &  \textbf{SI base units} &      & \textbf{SI derived units}\\ \hline
+%   radian\footnotemark[1]  &       \radianbase\(\,=1\)\footnotemark[2]  &  \radian  &  \derradian  \\
+%   steradian\footnotemark[1]       &  \steradianbase \(\,=1\)\footnotemark[2] &  \steradian\footnotemark[3]  &  \dersteradian  \\
+%   hertz  &  \hertzbase  &  \hertz  &       \derhertz  \\
+%   newton  &       \newtonbase  &  \newton  &  \dernewton  \\
+%   pascal  &       \pascalbase  &  \pascal  &  \derpascal  \\
+%   joule  &  \joulebase  &  \joule  &       \derjoule  \\
+%   watt  &  \wattbase       &  \watt  &  \derwatt  \\
+%   coulomb  &       \coulombbase  &  \coulomb  &  \dercoulomb  \\
+%   volt  &  \voltbase       &  \volt  &  \dervolt  \\
+%   farad  &  \faradbase  &  \farad  &       \derfarad \\
+%   ohm  &  \ohmbase  &  \ohm       &  \derohm  \\
+%   siemens  &       \siemensbase  &  \siemens  &  \dersiemens  \\
+%   weber  &  \weberbase  &  \weber  &       \derweber  \\
+%   tesla  &  \teslabase  &  \tesla  &       \dertesla  \\
+%   henry  &  \henrybase  &  \henry  &       \derhenry  \\
+%   celsius  &       \celsiusbase  &  \celsius  &  \dercelsius  \\
+%   lumen  &  \lumenbase\footnotemark[3]  &  \lumen  &       \derlumen  \\
+%   lux  &  \luxbase  &  \lux       &  \derlux  \\
+%   becquerel       &  \becquerelbase  &  \becquerel  &  \derbecquerel  \\
+%   gray  &  \graybase       &  \gray  &  \dergray  \\
+%   sievert\footnotemark[4] &       \sievertbase  &  \sievert  &  \dersievert  \\
+%   katal\footnotemark[5] & \katalbase & \katal & \derkatal\\
+%   \end{tabular}
+%    \footnotetext[1]
+%   {The radian and steradian may be used advantageously in expressions for derived units to
+%   distinguish between quantities of a different nature but of the same dimension; some
+%   examples are given in table~\ref{table:derived3}.}
+%    \footnotetext[2]
+%   {In practice, the symbols \radian\ and \steradian\ are used where appropriate, but the
+%   derived unit `\(1\)' is generally omitted.}
+%    \footnotetext[3]
+%   {In photometry, the unit name steradian and the unit symbol \steradian\ are usually
+%   retained in expressions for derived units.}
+%    \footnotetext[4]
+%   {Other quantities expressed in sieverts are ambient dose equivalent, directional dose
+%   equivalent, personal dose equivalent, and organ equivalent dose.}
+%    \footnotetext[5]
+%   {The 21st Conf\'{e}rence G\'{e}n\'{e}rale des Poids et Mesures decides to adopt the special name katal,
+%   symbol \katal, for the SI unit mole per second to express catalytic activity, especially
+%   in the fields of medicine and biochemistry, ... (21th CGPM (1999), Resolution 12).}
+%   \end{minipage}
+%   \end{table}
+%\subsubsection{Use of SI derived units with special names and symbols}
+%Examples of SI derived units that can be expressed with the aid of SI derived units
+%having special names and symbols (including the radian and steradian) are given in
+%table~\ref{table:derived2}. The advantages of using the special names and symbols of SI
+%derived units are apparent in table~\ref{table:derived3}. Consider, for example, the
+%quantity molar entropy: the unit \joenit{\joule\per\mole.\kelvin}\ is obviously more easily
+%understood than its SI base-unit equivalent,
+%\joenit{\squaremetre.\kilogram.\second\rpsquared.\reciprocal\kelvin\reciprocal\mole}.
+%Nevertheless, it should always be recognised that the special names and symbols exist for
+%convenience. Tables~\ref{table:derived2}~\&~\ref{table:derived3} also show that the
+%values of several different quantities are expressed in the same SI unit. For example,
+%the joule per kelvin (\joule\per\kelvin) is the SI unit for heat capacity as well as for
+%entropy. Thus the name of the unit is not sufficient to define the quantity measured. A
+%derived unit can often be expressed in several different ways through the use of base
+%units and derived units with special names. In practice, with certain quantities,
+%preference is given to using certain units with special names, or combinations of units,
+%to facilitate the distinction between quantities whose values have identical expressions
+%in terms of SI base units. For example, the SI unit of frequency is specified as the
+%hertz (Hz) rather than the reciprocal second (\reciprocal\second), and the SI unit of
+%moment of force is specified as the newton metre (\newtonmetre) rather than the joule
+%(\joule).
+%
+%   \begin{table}[btp]
+%     \caption{--- Examples of SI derived units expressed with the aid of SI
+%     derived units having special names and symbols ---}\label{table:derived3}
+%   \begin{minipage}[]{\textwidth}\renewcommand{\thefootnote}{\textit{\alph{footnote}}}
+%     \centering
+%   \begin{tabular}{lll}\hline
+%   \textbf{Derived quantity} & \textbf{Name} & \textbf{Symbol}\\ \hline
+%     angular velocity        & radian per second &    \radianpersecond \\
+%     angular acceleration & radian per second squared & \radianpersquaresecond  \\
+%     dynamic viscosity & pascal second & \pascalsecond \\
+%     moment of force          & newton metre & \newtonmetre \\
+%     surface tension &  newton per metre & \newtonpermetre \\
+%     heat flux density,\\ irradiance & watt per square metre & \wattpersquaremetre \\
+%     radiant intensity & watt per steradian & \watt\per\steradian \\
+%     radiance & watt per square metre steradian & \wattpersquaremetresteradian  \\
+%     heat capacity,\\ entropy & joule per kelvin & \jouleperkelvin \\
+%     specific heat capacity,\\  specific entropy & joule per kilogram kelvin & \jouleperkilogramkelvin \\
+%     specific energy          & joule per kilogram & \jouleperkilogram  \\
+%     thermal conductivity & watt per metre kelvin & \wattpermetrekelvin \\
+%     energy density & joule per cubic metre & \joulepercubicmetre \\
+%     electric field strength & volt per metre & \voltpermetre \\
+%     electric charge density & coulomb per cubic metre & \coulombpercubicmetre \\
+%     electric flux density & coulomb per square metre & \coulombpersquaremetre \\
+%     permittivity & farad per metre & \faradpermetre \\
+%     permeability & henry per metre & \henrypermetre \\
+%     molar energy & joule per mole  & \joulepermole \\
+%     molar entropy, molar\\ heat capacity & joule per mole kelvin &  \joulepermolekelvin \\
+%     exposure (x and \(\gamma\) rays)& coulomb per kilogram & \coulombperkilogram \\
+%     absorbed dose rate &  gray per second &          \graypersecond \\
+%     catalytic (activity)\\ concentration & katal per cubic metre  & \katalpercubicmetre \\
+%   \end{tabular}
+%   \end{minipage}
+%   \end{table}
+% \subsection{Dimension of a quantity}
+% Any SI derived quantity \(Q\) can be expressed in terms of the SI base quantities length
+% (\(l\)), mass (\(m\)), time (\(t\)), electric current (\(I\)), thermodynamic temperature
+% (\(T\)), amount of substance (\(n\)), and luminous intensity (\(I_{\mathrm{v}}\)) by an
+% equation of the form
+% \[
+% Q = l^{\alpha}m^{\beta}t^{\gamma}I^{\delta}T^{\varepsilon}n^{\zeta}I_{\mathrm{v}}^{\eta}
+% \sum\limits_{k = 1}^K {a_k} ,
+% \]
+% where the exponents \(\alpha\), \(\beta\), \(\gamma\), \(\ldots\) are numbers and the
+% factors \(a_{k}\) are also numbers. The dimension of \(Q\) is defined to be
+% \[
+% \dim Q = \dimn{L}^{\alpha} \dimn{M}^{\beta} \dimn{T}^{\gamma} \dimn{I}^{\delta}
+% \dimn{\Theta}^{\varepsilon} \dimn{N}^{\zeta} \dimn{J}^{\eta} ,
+% \]
+% where \dimn{L}, \dimn{M}, \dimn{T}, \dimn{I}, \dimn{\Theta}, \dimn{N} and \dimn{J}\ are
+% the dimensions of the SI base quantities length, mass, time, electric current,
+% thermodynamic temperature, amount of substance, and luminous intensity, respectively. The
+% exponents \(\alpha\), \(\beta\), \(\gamma\), \(\ldots\) are called ``dimensional
+% exponents''. The SI derived unit of \(Q \) is \(\joenit{\metre^{\alpha}.\kilogram^{\beta}
+%.\second^{\gamma}.\ampere^{\delta}.\kelvin^{\varepsilon}.\mole^{\zeta}
+%.\candela^{\eta}}\), which is obtained by replacing the dimensions of the SI base
+% quantities in the dimension of \(Q\) with the symbols for the corresponding base units.
+% \begin{quote}
+% \Fe\ Consider a nonrelativistic particle of mass \(m\) in uniform motion which travels a
+% distance \(l\) in a time \(t\). Its velocity is \(\upsilon=l / t\) and its kinetic energy
+% is \(E_{\mathrm{k}} =m\upsilon^{2} /2 = l^{2}mt^{-2} / 2\). The dimension of
+% \(E_{\mathrm{k}}\) is \(\dim E_{\mathrm{k}} = \dimn{L}^{2}\dimn{M}\dimn{T}^{-2}\) and the
+% dimensional exponents are \(2\), \(1\), and~\(-2\). The SI derived unit of \(E_{\mathrm{k}}\) is then
+% \(\joenit{\metre\squared.\kilogram.\second\rpsquared}\), which is given the special name
+% ``joule'' and special symbol \joule.
+% \end{quote}
+%
+% \subsubsection{Units for dimensionless quantities, quantities of dimension one}
+% A derived quantity of dimension one, which is sometimes called a ``dimensionless
+% quantity'', is one for which all of the dimensional exponents are zero: \(\dim Q = 1\). It
+% therefore follows that the derived unit for such a quantity is also the number one,
+% symbol 1, which is sometimes called a ``dimensionless derived unit''.
+% Thus the SI unit of all quantities having the dimensional product one is the
+% number one. Examples of such quantities are refractive index, relative permeability, and
+% friction factor. All of these quantities are described as being dimensionless, or of
+% dimension one, and have the coherent SI unit 1. Their values are simply expressed as
+% numbers and, in general, the unit 1 is not explicitly shown.
+% \begin{quote}
+% \Fe\ The mass fraction \(w_{\mathrm{B}}\) of a substance B in a mixture is given by
+% \(w_{\mathrm{B}} = m_{\mathrm{B}}/m\), where \(w_{\mathrm{B}}\) is the mass of B and
+% \(m\) is the mass of the mixture. The dimension of \(w_{\mathrm{B}}\) is \(\dim
+% w_{\mathrm{B}} = \dimn{M}^{1} \dimn{M}^{-1} = 1\); all of the dimensional exponents of
+% \(w_{\mathrm{B}}\) are zero, and its derived unit is \(\joenit{\kilogram^{1}.\kilogram^{-1}}=
+% 1\) also.
+% \end{quote}
+% In a few cases, however, a special name is given to this unit, mainly to avoid
+% confusion between some compound derived units. This is the case for the radian,
+% steradian and neper.
+%
+%\subsection{Rules and style conventions for writing and using SI unit symbols}
+%The general principles concerning writing the unit symbols were adopted by the 9th CPGM
+%(1948), by its Resolution 7:
+%\begin{enumerate}
+%\item Roman (upright) type, in general lower case\footnote{The recommended symbol for the
+%litre (`liter') in the United States is \liter.}, is used for the unit symbols. If,
+%however, the name of the unit is derived from a proper name, the first letter of the symbol
+%is in upper case.
+% \item Unit symbols are unaltered in the plural.
+% \item Unit symbols are not followed by a period\footnote{Unless at the end of a sentence.}.
+%\end{enumerate}
+%To ensure uniformity in the use of the SI unit symbols, ISO International Standards give
+%certain recommendations. Following these recommendations:
+%\begin{list}{a)}{}
+%\item The product of two or more units are indicated by means of either a half-high (that
+%is, centred) dot or a space\footnote{ISO suggests that if a space is used to indicate units
+%formed by multiplication, the space may be omitted if it does not cause confusion. This
+%possibility is reflected in the common practice of using the symbol \kilo\watt\hour\ rather
+%than \kilo\watt\(\cdot\)\hour\ or \joenit{\kilo\watt.\hour}\ for the kilowatt hour.}. The
+%half-high dot is preferred, because it is less likely to lead to confusion,
+% \begin{list}{}{}
+% \item \fe
+% \item \newton\(\cdot\)\metre\ or \(\newton\;\metre\).
+% \end{list}
+%\end{list}
+%\begin{list}{b)}{}
+% \item A solidus (oblique stroke,/), a horizontal line, or negative exponents may be used to
+%express a derived unit formed from two others by division,
+% \begin{list}{}{}
+% \item \fe
+% \item \metre\per\second,\ \(\frac{\metre}{\second}\),\ or \joenit{\metre.\reciprocal\second}
+% \end{list}
+%\end{list}
+%\begin{list}{c)}{}
+% \item The solidus must not be repeated on the same line unless ambiguity is avoided by
+% parentheses. In complicated cases negative exponents or parentheses should be used,
+% \begin{list}{}{}
+% \item \fe
+% \item \metre\per\second\squared\ or\ \joenit{\metre.\second\rpsquared}\ \textit{but not:\ }\metre\per\second\per\second\
+% \item \joenit{\metre.\kilogram\per(\cubic\second.\ampere)}\ or
+% \joenit{\metre.\kilogram.\rpcubic\second.\reciprocal\ampere}\ \textit{but not:}\ \joenit{\metre.\kilogram\per\cubic\second\per\ampere}
+% \end{list}
+%\end{list}
+%\subsubsection{Space between numerical value and unit symbol}
+%In the expression for the value of a quantity, the unit symbol is placed after the numerical value
+%and a space is left between the numerical value and the unit symbol.
+%The only exceptions to this rule are for the unit symbols for degree, minute, and second for plane
+%angle: \degree, \paminute, and \pasecond, respectively (see Table~\ref{table:accepted1}), in which case
+%no space is left between the numerical value and the unit symbol.
+% \begin{list}{}{}
+% \item \fe
+% \item \(\alpha = \unit{30}{\degree}\unit{22}{\paminute}\unit{8}{\pasecond}\) Note: \(\alpha\) is a quantity symbol for plane angle.
+% \end{list}
+% This rule means that the symbol \celsius\ for the degree Celsius is preceded by a space when one expresses the values of
+% Celsius temperatures.
+% \begin{list}{}{}
+% \item \fe
+% \item \(t = \unit{30.2}{\celsius}\) \textit{but not} \(t = 30.2\celsius\)
+% \end{list}
+%\section{SI Prefixes}
+%\subsection{Decimal multiples and submultiples of SI units}
+%The 11th CGPM (1960), by its Resolution 12, adopted a first series of prefixes and symbols
+%of prefixes to form the names and symbols of the decimal multiples and submultiples of SI
+%units. Prefixes for \power {10}{-15} and \power {10}{-18} were added by the 12th CGPM
+%(1964), by its Resolution 8, those for \power {10}{15} and \power {10}{18} by the CGPM
+%(1975), by its Resolution 10, and those for \power {10}{21}, \power {10}{24}, \power {10}
+%{-21}, and \power {10}{-24} were proposed by the CIPM for approval by the 19th CGPM (1991),
+%and adopted. The prefixes are as shown in tabel~\ref{table:prefixes}.
+%   \begin{table}[btp]
+%     \caption{--- SI prefixes ---}\label{table:prefixes}
+%   \begin{minipage}[]{\textwidth}\renewcommand{\thefootnote}{\textit{\alph{footnote}}}
+%     \centering
+%   \begin{tabular}{llllll}\hline
+%   \textbf{Name}& \textbf{Symbol}& \textbf{Factor} & \textbf{Name}& \textbf{Symbol}& \textbf{Factor}\\ \hline
+%   yocto  &  \yocto  &  \yoctod = \power{(\kilod)}{-8}& yotta      &  \yotta  &  \yottad = \power{(\kilod)}{8}\\
+%   zepto  &  \zepto  &  \zeptod = \power{(\kilod)}{-7}& zetta      &  \zetta  &  \zettad = \power{(\kilod)}{7}\\
+%   atto  &  \atto  &      \attod = \power{(\kilod)}{-6}   & exa   &  \exa   &  \exad = \power{(\kilod)}{6}\\
+%   femto  &  \femto  &  \femtod = \power{(\kilod)}{-5}& peta      &  \peta  &  \petad = \power{(\kilod)}{5}\\
+%   pico  &  \pico  &      \picod = \power{(\kilod)}{-4}   & tera  &  \tera  &  \terad = \power{(\kilod)}{4}\\
+%   nano  &  \nano  &      \nanod = \power{(\kilod)}{-3}   & giga  &  \giga  &  \gigad = \power{(\kilod)}{3}\\
+%   micro  &  \micro  &  \microd = \power{(\kilod)}{-2}& mega      &  \mega  &  \megad = \power{(\kilod)}{2}\\
+%   milli  &  \milli  &  \millid = \power{(\kilod)}{-1}& kilo      &  \kilo  &  \kilod = \power{(\kilod)}{1}\\
+%   centi  &  \centi  &  \centid           & hecto  &  \hecto  &  \hectod \\
+%   deci  &  \deci  &      \decid          & deca\footnotemark[1]  &  \deca  &  \decad \\
+%
+%   \end{tabular}
+%    \footnotetext[1]
+%   {In the USA, the spelling `deka' is extensively used.}
+%   \end{minipage}
+%   \end{table}
+%   \subsection{Rules for using SI prefixes}
+%   In accord with the general principles adopted by the ISO\footnote{ISO 31, in `Units of
+%   measurement,' ISO Standards Handbook 2, 2nd Edition, ISO, Geneva, 1982, pp. 17--238}, the
+%   CIPM recommends that the following rules for using the SI prefixes be observed:
+%   \begin{enumerate}
+%   \item Prefix symbols are printed in roman (upright) type without spacing between the prefix
+%   symbol and the unit symbol. \item The grouping formed by the prefix symbol attached to the
+%   unit symbol constitutes a new inseparable symbol (of a multiple of the unit concerned) which
+%   can be raised to a positive or negative power and which can be combined with other unit
+%   symbols to form compound unit symbols,
+%   \begin{list}{}{}
+%   \item \fe
+%    \item \(\unit{1}{\centi\cubic\metre} = \cubic{(\unit{\power{10}{-2}}{\metre})} = \unit{\power{10}{-6}}{\cubic\metre}\)
+%    \item \(\unit{1}{\reciprocal{\centi\metre}} = \reciprocal{(\unit{\centid}{\metre})} = \unit{\hectod}{\reciprocal\metre}\)
+%    \item \(\unit{1}{\volt\per\centi\metre} = (\unit{1}{\volt})\per(\unit{\centid}{\metre}) = \unit{\hectod}{\volt\per\metre}\)
+%   \end{list}
+%   \item Compound prefixes, i.\,e., prefixes formed by juxtaposition of two or more SI prefixes
+%   are not to be used,
+%   \begin{list}{}{}
+%   \item \fe \item \unit{1}{\pico\gram}\ (one picogram), \textit{but not} \unit{1}
+%   {\milli\nano\gram}\ (one millinanogram)
+%   \end{list}
+%   \item A prefixes should never be used alone,
+%   \begin{list}{}{}
+%   \item \fe \item \megad\per\cubic\metre, \textit{but not}
+%   \mega\per\cubic\metre
+%   \end{list}
+%   \end{enumerate}
+%   \subsubsection{The kilogram}
+%   It is important to note that the kilogram is the only SI unit with a prefix as part of its
+%   name and symbol. Because multiple prefixes may not be used, in the case of the kilogram the
+%   prefix names are used with the unit name `gram' and the prefix symbols are used with the
+%   unit symbol \gram, \fe\\ \unit{\microd}{\kilogram}\ = \unit{1}{\milli\gram}\ (one
+%   milligram), \textit{but not} \unit{\microd}{\kilogram}\ = \unit{1}{\micro\kilogram} ~(one
+%   microkilogram).
+%   \subsubsection{The `degree Celsius'} Except for the kilogram, any SI prefix may be used with any SI unit,
+%   including the `degree Celsius' and its symbol \celsius, \fe \\
+%   \unit{\millid}{\celsius}\ = \unit{1}{\milli\celsius}\ (one millidegree Celsius), \textit{or}
+%   \unit{\megad}{\celsius}\ = \unit{1}{\mega\celsius}.
+%    \section{Prefixes for binary multiples} In December 1998 the International
+%    Electrotechnical Commission (IEC), the leading international organization for worldwide
+%    standardization in electrotechnology, approved as an IEC International Standard names and
+%    symbols for prefixes for binary multiples for use in the fields of data processing and
+%    data transmission. The prefixes are as shown in table~\ref{table:bipre}.
+%   \begin{table}[btp]
+%     \caption{--- Prefixes for binary multiples ---}\label{table:bipre}
+%   \begin{minipage}[]{\textwidth}\renewcommand{\thefootnote}{\textit{\alph{footnote}}}
+%     \centering
+%   \begin{tabular}{lllllll}\hline
+%    \textbf{Factor} & \textbf{Name} &      \textbf{Symbol} &  \textbf{Origin}& &  \multicolumn{2}{l}{\textbf{Derivation}}\\
+%    \hline
+%    \kibid   &  kibi         &   \kibi     &  kilobinary: & \power{(\power{2}{10})}{1}  &  kilo:& \power{(\kilod)}{1}\\
+%    \mebid   &  mebi         &   \mebi     &  megabinary: & \power{(\power{2}{10})}{2}  &  mega:& \power{(\kilod)}{2}\\
+%    \gibid   &  gibi         &   \gibi     &  gigabinary: & \power{(\power{2}{10})}{3}  &  giga:& \power{(\kilod)}{3}\\
+%    \tebid   &  tebi         &   \tebi     &  terabinary: & \power{(\power{2}{10})}{4}  &  tera:& \power{(\kilod)}{4}\\
+%    \pebid   &  pebi         &   \pebi     &  petabinary: & \power{(\power{2}{10})}{5}  &  peta:& \power{(\kilod)}{5}\\
+%    \exbid   &  exbi         &   \exbi     &  exabinary:  & \power{(\power{2}{10})}{6}  &  exa: & \power{(\kilod)}{6}\\
+%   \end{tabular}
+%   \end{minipage}
+%   \end{table}
+%   \begin{table}[btp]
+%     \caption{--- Examples and comparisons with SI prefixes ---}\label{table:bipre2}
+%   \begin{minipage}[]{\textwidth}\renewcommand{\thefootnote}{\textit{\alph{footnote}}}
+%     \centering
+%   \begin{tabular}{lllllll}\hline
+%    one kibibit  & \unit{1}{\kibi\bit } & = & \unit{\kibid}{\bit } & = & \unit{1\,024      }{\bit }\\
+%    one kilobit  & \unit{1}{\kilo\bit } & = & \unit{\kilod}{\bit } & = & \unit{1\,000      }{\bit }\\
+%    one mebibyte & \unit{1}{\mebi\byte} & = & \unit{\mebid}{\byte} & = & \unit{1\,048\,576}{\byte}\\
+%    one megabyte & \unit{1}{\mega\byte} & = & \unit{\megad}{\byte} & = & \unit{1\,000\,000}{\byte}\\
+%    one gibibyte & \unit{1}{\gibi\byte} & = & \unit{\gibid}{\byte} & = & \unit{1\,073\,741\,824}{\byte}\\
+%    one gigabyte & \unit{1}{\giga\byte} & = & \unit{\gigad}{\byte} & = & \unit{1\,000\,000\,000}{\byte}\\
+%   \end{tabular}
+%   \end{minipage}
+%   \end{table}%
+%    It is suggested that in English, the first syllable of the name of the binary-multiple
+%    prefix should be pronounced in the same way as the first syllable of the name of the
+%    corresponding SI prefix, and that the second syllable should be pronounced as ``bee".
+%
+%\subsubsection*{Note}
+%It is important to recognize that the new prefixes for binary multiples are \textit{not}
+%part of the International System of Units (SI), the modern metric system. However, for
+%ease of understanding and recall, they were derived from the SI prefixes for positive
+%powers of ten. As can be seen from the above table, the name of each new prefix is
+%derived from the name of the corresponding SI prefix by retaining the first two letters
+%of the name of the SI prefix and adding the letters ``\textrm{bi}", which recalls the word
+%``binary". Similarly, the symbol of each new prefix is derived from the symbol of the
+%corresponding SI prefix by adding the letter ``\textrm{i}", which again recalls the word
+%``binary". (For consistency with the other prefixes for binary multiples, the symbol
+%\kibi\ is used for \kibid\ rather than \textrm{ki}.)
+%\subsection{Official publication}
+%These prefixes for binary multiples, which were developed by IEC Technical Committee (TC)
+%25, Quantities and units, and their letter symbols, with the strong support of the
+%International Committee for Weights and Measures (CIPM) and the Institute of Electrical
+%and Electronics Engineers (IEEE), were adopted by the IEC as \textit{Amendment 2 to IEC
+%International Standard IEC 60027-2: Letter symbols to be used in electrical technology -
+%Part 2: Telecommunications and electronics}. The full content of \textit{Amendment 2},
+%which has a publication date of 1999-01, is reflected in the tables above and the
+%suggestion regarding pronunciation.
+%\changes{v0.99}{1999/07/28}{New binary prefixes support/documentation section added}
+%\subsection{The \texttt{binary.sty} style for binary prefixes and (non-SI) units}
+%   The \texttt{binary.sty} style for binary prefixes and (non-SI) units can be loaded by using the option \opt{binary}, as in |\usepackage[binary]{SIunits}|. This unit should always
+%   be used in conjunction with the \pkgname{SIunits}\ package.
+%   \section{Units outside the SI}
+%   Units that are outside the SI may be divided into three categories:
+%   \begin{enumerate}
+%   \item those units that are accepted for use with the SI;
+%   \item those units that are temporarily accepted for use with the SI; and
+%   \item those units that are not accepted for use with the SI and thus must strictly be avoided.
+%   \end{enumerate}
+%   \subsection{Units accepted for use with the SI}
+%   The CIPM (1969) recognised that users of SI will also wish to employ with it certain units not part of it, but
+%   which are important and are widely used. These units are given in table~\ref{table:accepted1}. The combination of
+%   units of this table with SI units to form compound units should be restricted to special cases in order not
+%   to lose the advantage of the coherence of SI units.\\
+%    \begin{table}[btp]
+%      \caption{--- Units accepted for use with the SI ---}\label{table:accepted1}
+%    \begin{minipage}[]{\textwidth}\renewcommand{\thefootnote}{\textit{\alph{footnote}}}
+%      \centering
+%    \begin{tabular}{lll}\hline
+%    \textbf{Name} & \textbf{Symbol} &       \textbf{Value in SI units}\\ \hline
+%     minute (time)    &     \minute    &   \unit{1}{\minute} = \unit{60}{\second}   \\
+%     hour     &      \hour     &   \unit{1}{\hour} = \unit{60}{\minute} = \unit{\intfmt{3600}}{\second} \\
+%     day    &  \dday &      \unit{1}{\dday} = \unit{24}{\hour} = \unit{\intfmt{86400}}{\second} \\
+%     degree\footnotemark[1]  &     \degree    &   \unit{1}{\degree} = \unit{(\pi/180)}{\radian}  \\
+%     minute (plane angle)    & \paminute &   \unit{1}{\paminute} = \unit{(1/60)}{\degree} = \unit{(\pi/\intfmt{10800})}{\radian}      \\
+%     second (plane angle)      & \pasecond     &  \unit{1}{\pasecond} = \unit{(1/60)}{\paminute} = \unit{(\pi/\intfmt{648000})}{\radian}  \\
+%     litre    &      \litre, \liter\footnotemark[2]    &   \unit{1}{\litre} = \unit{1}{\liter} = \unit{1}{\cubic{\deci\metre}} = \unit{\millid}{\cubic\metre} \\
+%     tonne\footnotemark[3]    &      \tonne &   \unit{1}{\ton} = \unit{\kilod}{\kilogram}   \-\\
+%     neper\footnotemark[4]\footnotemark[5]    &     \neper    &   \unit{1}{\neper} = \unit{1}{\one}   \\
+%     bel\footnotemark[6]\footnotemark[5]     &      \bel     &   \unit{1}{\bel} = \unit{(1/2)\ln 10}{(\neper)}\footnotemark[7]\\
+%    \end{tabular}
+%     \footnotetext[1]
+%    {ISO 31 recommends that the degree be subdivided decimally rather than using the minute
+%    and second.}
+%     \footnotetext[2]
+%    {The alternative symbol for the litre, \liter, was adopted by the CGPM in order to avoid
+%    the risk of confusion between the letter l and the number \(1\). Thus, although both
+%    \litre\ and \liter\ are internationally accepted symbols for the litre, to avoid this
+%    risk the symbol to be used in the United States is \liter.}
+%     \footnotetext[3]
+%    {In some English-speaking countries this unit is called `metric ton'.}
+%     \footnotetext[4]
+%    {The neper is used to express values of such logarithmic quantities as field level, power
+%    level, sound pressure level, and logarithmic decrement. Natural logarithms are used to
+%    obtain the numerical values of quantities expressed in nepers. The neper is coherent with
+%    the SI, but not yet adopted by the CGPM as an SI unit. For further information see
+%    International Standard ISO 31.}
+%     \footnotetext[5]
+%    {The bel is used to express values of such logarithmic quantities as field level, power
+%    level, sound pressure level, and attenuation. Logarithms to base ten are used to obtain
+%    the numerical values of quantities expressed in bels. The submultiple decibel, \deci\bel,
+%    is commonly used. For further information see International Standard ISO 31.}
+%     \footnotetext[6]
+%    {In using these units it is particularly important that the quantity be specified. The
+%    unit must not be used to imply the quantity.}
+%     \footnotetext[7]
+%    {\neper\ is enclosed in parentheses because, although the neper is coherent with the SI,
+%    it has not yet been adopted by the CGPM.}
+%
+%
+%    \end{minipage}
+%    \end{table}
+%   It is likewise necessary to recognise, outside the International System, some other units that are useful in
+%   specialised fields, because their values expressed in SI units must be obtained by experiment, and are therefore
+%   not known exactly (table~\ref{table:accepted2}).
+%   \begin{table}[btp]
+%     \caption{--- Units accepted for use with the SI whose values in SI units are obtained experimentally ---}\label{table:accepted2}
+%   \begin{minipage}[]{\textwidth}\renewcommand{\thefootnote}{\textit{\alph{footnote}}}
+%     \centering
+%   \begin{tabular}{llc}\hline
+%    \textbf{Name}            & \textbf{Symbol}  & \textbf{Definition}\\ \hline
+%    electronvolt             &  \electronvolt   & \footnotemark[1]   \\
+%    unified atomic mass unit &  \atomicmass     & \footnotemark[2]   \\
+%    \end{tabular}
+%    \footnotetext[1]
+%   {The electronvolt is the kinetic energy acquired by an electron in passing through a
+%   potential difference of \(1\) \volt\ in vacuum; \unit{1}{\electronvolt} =
+%   \(\unit{\sci{\nmfmt{1.60217733}e-19}}{\joule}\) with a combined standard
+%   uncertainty of \(\unit{\sci{\nmfmt{0.00000049}e-19}}{\joule}\).}
+%    \footnotetext[2]
+%   {The unified atomic mass unit is equal to \(1/12\) of the mass of an atom of the nuclide
+%   \(^{12}\mathrm{C}\); \unit{1}{\atomicmass} =
+%   \unit{\sci{\nmfmt{1.6605402}e-27}}{\kilogram} with a combined standard
+%   uncertainty of \unit{\sci{\nmfmt{0.0000010}e-27}}{\kilogram}.}
+%   \end{minipage}
+%   \end{table}
+%   \subsection{Units temporarily accepted for use with the SI}
+%   Because of existing practice in certain fields or countries, in 1978 the CIPM considered that it was permissible
+%   for the units given in table~\ref{table:temporarily} to continue to be used with the SI until the CIPM considers that
+%   their use is no longer necessary. However, these units must not be introduced where they are not presently used.
+%   \begin{table}[btp]
+%     \caption{--- Units in use temporarily with the SI ---}\label{table:temporarily}
+%   \begin{minipage}[]{\textwidth}\renewcommand{\thefootnote}{\textit{\alph{footnote}}}
+%     \centering
+%   \begin{tabular}{lll}\hline
+%   \textbf{Name} & \textbf{Symbol} & \textbf{Value in SI units}\\ \hline
+%   nautical mile\footnotemark[1]    &      \     &   \unit{1}{nautical\ mile} = \unit{\intfmt{1852}}{\metre}   \\
+%   knot     &      \     &   \unit{1}{nautical\ mile\ per\ hour} = \unit{(\intfmt{1852}/\intfmt{3600})}{\metre\per\second} \\
+%   \aa ngstr\"{o}m &     \angstrom    &   \unit{1}{\angstrom} = \unit{0.1}{\nano\metre} = \unit{\power{10}{-10}}{\metre} \\
+%   are\footnotemark[2]  &  \are    &     \unit{1}{\are} = \unit{1}{\square{\deca\metre}} = \unit{\power{10}{2}}{\square\metre} \\
+%   hectare\footnotemark[2]   &  \hectare    &     \unit{1}{\hectare} = \unit{1}{\square{\hecto\metre}} = \unit{\power{10}{4}}{\square\metre} \\
+%   barn\footnotemark[3]   &  \barn   &  \unit{1}{\barn} = \unit{100}{\square{\femto\metre}} = \unit{\power{10}{-28}}{\square\metre} \\
+%   bar\footnotemark[4]   &  \bbar   &      \unit{1}{\bbar} = \unit{0.1}{\mega\pascal} = \unit{\power{10}{5}}{\pascal} \\
+%   gal\footnotemark[5]   &  \gal    &     \unit{1}{\gal} = \unit{1}{\centi\metre\per\second\squared} = \unit{\power{10}{-2}}{\metre\per\second\squared} \\
+%   curie\footnotemark[6]   &      \curie   &  \unit{1}{\curie} = \(\unit{\sci{3.7e10}}{\becquerel}\) \\
+%   roentgen\footnotemark[7]       &  \roentgen   & \unit{1}{\roentgen} = \(\unit{\sci{2.58e-4}}{\coulomb\per\second}\)  \\
+%   rad\footnotemark[8]   &  \rad    &     \unit{1}{\rad} = \unit{1}{\centi\gray} = \unit{\power{10}{-2}}{\gray} \\
+%   rem\footnotemark[9]   &  \rem    &     \unit{1}{\rem} = \unit{1}{\centi\sievert} = \unit{\power{10}{-2}}{\sievert} \\
+%   \end{tabular}
+%    \footnotetext[1]
+%   {The nautical mile is a special unit employed for marine and aerial navigation to express
+%   distances. The conventional value given above was adopted by the First International
+%   Extraordinary Hydrographic Conference, Monaco, 1929, under the name ``International
+%   nautical mile''.}
+%    \footnotetext[2]
+%   {This unit and its symbol were adopted by the CIPM in 1879 (BIPM Proc. Verb. Com. Int.
+%   Poids et Mesures, 1879, p. 41) and are used to express agrarian areas.}
+%    \footnotetext[3]
+%   {The barn is a special unit employed in nuclear physics to express effective cross
+%   sections.}
+%    \footnotetext[4]
+%   {This unit and its symbol are included in Resolution 7 of the 9th CGPM (1948).}
+%    \footnotetext[5]
+%   {The gal is a special unit employed in geodesy and geophysics to express the acceleration
+%   due to gravity.}
+%    \footnotetext[6]
+%   {The curie is a special unit employed in nuclear physics to express activity of
+%   radionuclides (12th CGPM (1964), Resolution 7).}
+%    \footnotetext[7]
+%   {The roentgen is a special unit employed to express exposure of x or \(\gamma\)
+%   radiations.}
+%    \footnotetext[8]
+%   {The rad is a special unit employed to express absorbed dose of ionising radiations. When
+%   there is risk of confusion with the symbol for radian, rd may be used as the symbol for
+%   rad.}
+%    \footnotetext[9]
+%   {The rem is a special unit used in radioprotection to express dose equivalent.}
+%
+%   \end{minipage}
+%   \end{table}
+%
+%   \section{Last notes about correct usage of the SI}
+%   The following points underline some of the important aspects about using SI units and their
+%   symbols, and also mention some of the common errors that are made. The SI differs from some
+%   of the older systems in that it has \textit{definite} rules governing the way the units and
+%   symbols are used.
+%   \begin{itemize}
+%   \item The unit of measure is the \textit{`metre'}, not \textit{`meter'}. The latter is a device used
+%   for measuring things. (Unless you live in the USA - in which case you will just have to live
+%   with the ambiguity.) \item Using a comma to separate groups of three digits is not
+%   recommended - a (thin) space is preferable, since many countries use the comma as the decimal point
+%   marker. Both the USA and UK use the `dot on the line' (full stop). So the following would be
+%   correct: \nmfmt{1234555.678990}. \item The term \textbf{billion} should be avoided since in
+%   most countries outside the USA (including the UK) it means a million-million (prefix tera),
+%   whereas in the USA it means a thousand million (prefix giga). Likewise the term \textbf{trillion}
+%   means million-million-million (prefix exa) in most countries outside the USA.
+%   \item The `litre' (`liter' in the US) is one of those units which is approved by the CGPM for
+%   use with the metric system. The official unit of volume in the SI is the cubic metre.
+%   However, since this is not convenient for much day-to-day use the CGPM has approved the use
+%   of the `other unit', the litre. The litre represents a cubic decimetre and you may use
+%   either the symbol `\litre' or `\liter'\footnote{Recommended symbol for the `liter' in the USA} (small
+%   or capital `ell') to represent it. They do not approve using any prefixes other than milli
+%   or micro with it. It was originally defined as the volume occupied by \unit{1}{\kilogram}\ of water.
+%   Subsequently it was found that this was not precisely 1 cubic decimetre, so the term litre
+%   was withdrawn. Later it was re-introduced officially as 1 cubic decimetre exactly. So,
+%   \unit{1}{\litre} = \unit{1}{\cubic{\deci\metre}} = \unit{1}{\liter}.
+%   \end{itemize}
+%
+%    \section{How to use the package}
+%
+%    \subsection{Loading}
+%    Most features are controlled by package options that can be selected
+%    when the package is loaded (e.\,g |\usepackage|\oarg{options}|{SIunits}|) or at
+%    `runtime' as an optional argument(list) to the |\SIunits| command
+%    (e.\,g. \cmd{\SIunits}\oarg{options}).
+%
+%    \begin{verbatim}
+%    \documentclass[]{article}
+%
+%    \usepackage[options]{SIunits}
+%
+%    \begin{document}
+%    \ldots
+%    \SIunits[options]
+%    \ldots
+%    \end{document}
+%    \end{verbatim}
+%
+%
+%    \subsection{The package options}\label{sec:options}
+%    \changes{v0.02 Beta  2}{1998/09/10}{Code documentation corrections}
+%    The options can be grouped in the following categories:
+%    \begin{enumerate}
+%    \item unit spacing;
+%    \item quantity-unit spacing;
+%    \item conflicts;
+%    \item textstyle;
+%    \item miscellaneous.
+%    \end{enumerate}
+%    \subsubsection{Unit spacing options}
+%    \begin{labeling}{\hspace{12mm}}
+%    \item[\opt{cdot}]
+%    This mode provides the use of \cmd{\cdot} as spacing in units.
+%    \item[\opt{thickspace}]
+%    This mode provides the use of \cmd{\;} (thick math space) as spacing in units.
+%    \item[\opt{mediumspace}]
+%    This mode provides the use of \cmd{\:} (medium math space) as spacing in units.
+%    \item[\opt{thinspace}]
+%    This mode provides the use of \cmd{\,} (thin math space) as spacing in units.
+%    \end{labeling}
+%    \subsubsection{Quantity-unit spacing options}
+%    \begin{labeling}{\hspace{12mm}}
+%    \item[\opt{thickqspace}]
+%    This mode provides the use of \cmd{\;} (thick math space) as spacing between numerical quantities and units.
+%    \item[\opt{mediumqspace}]
+%    This mode provides the use of \cmd{\:} (medium math space) as spacing between numerical quantities and units.
+%    \item[\opt{thinqspace}]
+%    This mode provides the use of \cmd{\,} (thin math space) as spacing between numerical quantities and units.
+%    \end{labeling}
+%    \subsubsection{Options to prevent conflicts}
+%    \subsubsection*{Conflicts with the \texttt{amssymb} package}
+%    In the |amssymb| package the command |\square| is defined. This will cause error messages
+%    when the |amssymb| package is used in combination with the \pkgname{SIunits}\ package. To prevent
+%    errors one can choose two different options:
+%    \begin{labeling}{\hspace{15mm}}
+%    \item[\opt{amssymb}]This option redefines the \texttt{amssymb} command |\square| to get the desired
+%    \pkgname{SIunits}\ definition of the command.\\ \textbf{Note: }When using this option, the \texttt{amssymb} command
+%    |\square| can \textbf{not} be used.
+%    \item[\opt{squaren}]This option defines a new command |\squaren| that can be used instead of the
+%    \pkgname{SIunits}\ command |\square|.\\ \textbf{Note: }When using this option, the \texttt{amssymb} definition for
+%    |\square| is used.
+%    \end{labeling}
+%    \changes{v0.06 Beta  2}{1998/04/07}{amssymb conflicts section added to documentation}
+%    \subsubsection*{Conflicts with the \texttt{pstricks} package}
+%    In the |pstricks| package the command |\gray| is defined. This will cause error messages
+%    when the |pstricks| package is used in combination with the \pkgname{SIunits}\ package. To prevent
+%    errors one can choose two different options:
+%    \changes{v0.99}{1999/10/29}{pstricks conflicts section added to documentation}
+%    \begin{labeling}{\hspace{15mm}}
+%    \item[\opt{pstricks}]This option redefines the \texttt{pstricks} command |\gray| to get the desired
+%    \pkgname{SIunits}\ definition of the command.\\ \textbf{Note: }When using this option, the \texttt{pstricks} command
+%    |\gray| can \textbf{not} be used.
+%    \item[\opt{Gray}]This option defines a new command |\Gray| that can be used instead of the
+%    \pkgname{SIunits}\ command |\gray|.\\ \textbf{Note: }When using this option, the \texttt{pstricks} definition for
+%    |\gray| is used.
+%    \end{labeling}
+%    \subsubsection*{Conflicts with the \texttt{babel} package in combination with the \opt{italian} language}
+%    In the |babel| package, when using the italian language, the command |\unit| is defined. This will prevent \pkgname{SIunits}\ from functioning.
+%    To prevent this, choose the option:
+%    \begin{labeling}{\hspace{15mm}}
+%    \item[\opt{italian}]This option defines a new command |\unita| (italian for unit) that can be used instead of the
+%    \pkgname{SIunits}\ command |\unit|.\\ \textbf{Note: }When using this option, the \texttt{babel} definition for
+%    |\unit| is used.
+%    \end{labeling}
+%    \subsubsection{textstyle}
+%    \begin{labeling}{\hspace{12mm}}
+%    \item[\opt{textstyle}]
+%    When using the option \opt{textstyle} units are printed in the typeface of the
+%    enclosing text, automatically.
+%    \end{labeling}
+%    \subsubsection{miscellaneous}
+%    \begin{labeling}{\hspace{12mm}}
+%    \item[\opt{binary}]
+%    This option loads the file \texttt{binary.sty}, which defines prefixes for binary multiples.
+%    \item[\opt{noams}]
+%    This option redefines the \cmd{\micro} command; use it when you don't have the AMS font, eurm10.
+%    \item[\opt{derivedinbase}]
+%    This mode provides the ready-to-use expressions of SI derived units in SI base units,
+%    e.\,g. \verb=\pascalbase= to get `\pascalbase'.
+%    \item[\opt{derived}]
+%    This mode provides the ready-to-use expressions of SI derived units in SI derived units,
+%    e.\,g. \verb=\derpascal= to get `\derpascal'.
+%    \end{labeling}
+%    \changes{v0.02 Beta  2}{1998/09/10}{Spacing examples table added}
+%    \changes{v0.03 Beta  2}{1998/10/30}{Spacing examples table update}
+%    See table~\ref{table:spacing} for examples of the spacing options.
+%   \begin{table}[btp]
+%     \caption{--- Spacing options ---}\label{table:spacing}
+%   \begin{minipage}[]{\textwidth}\renewcommand{\thefootnote}{\textit{\alph{footnote}}}
+%   \centering
+%   \begin{tabular}{lll}\hline
+%   \textbf{Option} &      \textbf{Example}\\ \hline
+%   \opt{cdot} &\(\newton\cdot\metre\)\\
+%   \opt{thickspace}& \(\newton\;\metre\)\\
+%   \opt{mediumspace}&\(\newton\:\metre\)\\
+%   \opt{thinspace}&\(\newton\,\metre\)\\
+%   \opt{thickqspace}& \(10\;\newton\;\metre\)\\
+%   \opt{mediumqspace}&\(10\:\newton\;\metre\)\\
+%   \opt{thinqspace}&\(10\,\newton\;\metre\)\\
+%   \end{tabular}
+%   \end{minipage}
+%   \end{table}
+%    \changes{v0.02 Beta  6}{1998/09/24}{Inconsistencies removed in documentation}
+%    \normalsize
+%    \section*{Command Reference}
+%    \subsection{How to compose units in your text.}
+%    The purpose of the \pkgname{SIunits}\ package is: to give an author an intuitive system for writing
+%    units.
+%    Just type (in \LaTeX-kind commands) what you would say: |\kilogram| or |\kelvin| to get
+%    `\kilogram' or `\kelvin'.
+%
+%
+%    To use the prefixes with SI units simply place them before the unit, e.\,g. |\milli\ampere|,
+%    |\deca\metre| (or |\deka\meter|) or |\mega\ohm| to get: `\milli\ampere', `\deca\metre' or `\mega\ohm'.
+%    Decimal values of the prefixes can be made by adding |d| behind the prefix command. See command reference on page~\pageref{commandreference}.
+%     \begin{table}[p]
+%     \label{commandreference}
+%     \centering
+%    \begin{tabular}{lr@{\ \vline\ }lr@{\ \vline\ }lr}
+%    \multicolumn{6}{c}{\textbf{SI base units}}\\ \hline
+%     |\metre|     & \metre      & |\second| & \second  & |\mole|    & \mole     \\
+%     |\meter|     & \meter      & |\ampere| & \ampere  & |\candela| & \candela  \\
+%     |\kilogram|  & \kilogram   & |\kelvin| & \kelvin                           \\ \hline \\
+%    \multicolumn{6}{c}{\textbf{SI derived units}}\\ \hline
+%     |\hertz|     & \hertz    & |\farad|    & \farad    & |\degreecelsius|     & \degreecelsius \\
+%     |\newton|    & \newton   & |\ohm|      & \ohm      & |\lumen|             & \lumen        \\
+%     |\pascal|    & \pascal   & |\siemens|  & \siemens  & |\lux|               & \lux          \\
+%     |\joule|     & \joule    & |\weber|    & \weber    & |\becquerel|         & \becquerel    \\
+%     |\watt|      & \watt     & |\tesla|    & \tesla    & |\gray|              & \gray         \\
+%     |\coulomb|   & \coulomb  & |\henry|    & \henry    & |\sievert|           & \sievert      \\
+%     |\volt|      & \volt     & |\celsius|  & \celsius                             \\ \hline   \\
+%    \multicolumn{6}{c}{\textbf{Units outside of SI}}\\ \hline
+%     |\angstrom|   & \angstrom    & |\dday|          &  \dday          & |\minute|       & \minute      \\
+%     |\arcminute|  & \arcminute   & |\degree|        &  \degree        & |\neper|        & \neper       \\
+%     |\arcsecond|  & \arcsecond   & |\electronvolt|  &  \electronvolt  & |\rad|          & \rad         \\
+%     |\are|        & \are         & |\gal|           &  \gal           & |\rem|          & \rem         \\
+%     |\atomicmass| & \atomicmass  & |\gram|          &  \gram          & |\roentgen|     & \roentgen    \\
+%     |\barn|       & \barn        & |\hectare|       &  \hectare       & |\rperminute|   & \rperminute  \\
+%     |\bbar|       & \bbar        & |\hour|          &  \hour          & |\tonne|        & \tonne       \\
+%     |\bel|        & \bel         & |\liter|         &  \liter         & |\ton|          & \ton         \\
+%     |\curie|      & \curie       & |\litre|         &  \litre         \\ \hline \\
+%    \multicolumn{6}{c}{\textbf{SI Prefixes}}\\ \hline
+%     |\yocto|  &  \yocto   & |\milli|  &  \milli   & |\mega|   &  \mega   \\
+%     |\zepto|  &  \zepto   & |\centi|  &  \centi   & |\giga|   &  \giga   \\
+%     |\atto|   &  \atto    & |\deci|   &  \deci    & |\tera|   &  \tera   \\
+%     |\femto|  &  \femto   & |\deca|   &  \deca    & |\peta|   &  \peta   \\
+%     |\pico|   &  \pico    & |\deka|   &  \deca    & |\exa|    &  \exa    \\
+%     |\nano|   &  \nano    & |\hecto|  &  \hecto   & |\zetta|  &  \zetta  \\
+%     |\micro|  &  \micro   & |\kilo|   &  \kilo    & |\yotta|  &  \yotta  \\ \hline \\
+%    \multicolumn{6}{c}{\textbf{Decimal values of SI Prefixes}}\\ \hline
+%     |\yoctod|  &  \yoctod   & |\millid|  &  \millid   & |\megad|   &  \megad   \\
+%     |\zeptod|  &  \zeptod   & |\centid|  &  \centid   & |\gigad|   &  \gigad   \\
+%     |\attod|   &  \attod    & |\decid|   &  \decid    & |\terad|   &  \terad   \\
+%     |\femtod|  &  \femtod   & |\decad|   &  \decad    & |\petad|   &  \petad   \\
+%     |\picod|   &  \picod    & |\dekad|   &  \dekad    & |\exad|    &  \exad    \\
+%     |\nanod|   &  \nanod    & |\hectod|  &  \hectod   & |\zettad|  &  \zettad  \\
+%     |\microd|  &  \microd   & |\kilod|   &  \kilod    & |\yottad|  &  \yottad  \\
+%    \end{tabular}
+%     \end{table}
+%   \subsubsection{Division or multiplication of SI units}
+%   The next step is the formation of units based on division and/or multiplication of SI units.
+%   \paragraph{Division}
+%   How to get the unit of speed?
+%   \begin{enumerate}
+%   \item Write down the unit in words: |metre per second|
+%   \item Replace the spaces with backlashes to get the command: |\metre\per\second|
+%   \item The result is: `\metre\per\second'.
+%   \end{enumerate}
+%   Simple! Ready!
+%   \paragraph{Multiplication}
+%    Now an example of multiplication of units, the unit of torque (newton metre):
+%   \begin{enumerate}
+%   \item Write down the unit in words: |newton metre|
+%   \item To get an separation character between the two units use the command \cmd{\usk} (unitskip): |\newton\usk\metre|
+%   \item The result is: `\joenit{\newton.\metre}'. The spacing between the units depends on the spacing
+%   options (see: page \pageref{sec:options}).
+%   \end{enumerate}
+%   \paragraph{Mixed case}
+%   The mixed case should be simple now; the unit of thermal conductivity (watt per metre kelvin):
+%   \begin{enumerate}
+%   \item Use your just-learned-knowledge:|\watt\per\metre\usk\kelvin|
+%   \item The result is: `\wattpermetrekelvin'.
+%   \end{enumerate}
+%   Now, you can do it all in one step! Intuitive \& simple.
+%
+%   \subsubsection{Raising SI units to a power}
+%   The \pkgname{SIunits}\ package provides a set of functions to get units raised to a particular power.
+%   \paragraph{Squaring and cubing}
+%   How to get the units of area (square metre) and volume (cubic metre)?
+%   \begin{enumerate}
+%   \item Write down the unit in words: |square metre| and |cubic metre|
+%   \item Replace the spaces with backlashes to get the commands: |\square\metre| and |\cubic\metre|
+%   \item The result is: ` \square\metre' and `\cubic\metre'.
+%   \end{enumerate}
+%   I can hear you say: ``We only use the word `square' before the unit metre, normally we place
+%   the word `squared' behind the unit name.''. OK, lets try: |\second\squared| and
+%   |\second\cubed| gives: `\second\squared' and `\second\cubed'.
+%   Thus, no problem.
+%   \paragraph{The reciprocal, reciprocal squaring and - cubing}
+%   How to get negative powers?
+%   \begin{enumerate}
+%   \item Use |\rpsquare| or |\rpsquared|, and |\rpcubic| and |\rpcubed|
+%   \item \Fe |\rpsquare\metre| and |\second\rpcubed|
+%   \item The result is: ` \rpsquare\metre' and `\second\rpcubed'.
+%   \end{enumerate}
+%   Normally, we leave out the exponent \(1\), but sometimes we want to use the exponent \(-1\).
+%   How to form the unit of frequency (reciprocal second = \hertz)
+%   \begin{enumerate}
+%   \item Write down the unit in words: |reciprocal second|,
+%   \item Replace the spaces with backlashes to get the commands: |\reciprocal\second|,
+%   \item The result is: `\reciprocal\second'.
+%   \end{enumerate}
+%   \paragraph{The power function}
+%   The \cmd{\power} macro has been added to be able to form the wildest types of power raising:
+%   |\power{10}{35}| gives: \power{10}{35}.
+%
+%    \subsection{Quantities and units}
+%    Use the command \cmd{\unit} to get consistent spacing between numerical quantities and units. Usage:\\
+%    |\unit{120}{\kilo\meter\per\hour}| gives: \unit{120}{\kilo\meter\per\hour}.
+%    \changes{v0.03 Beta  2}{1998/10/30}{documentation update}
+%
+%    \subsubsection{Ready-to-use units}
+%    {\begin{tabbing} \label{commands:prefab}
+%    \changes{v0.05 Beta 1}{1999/02/01}{Inconsistencies in Ready-to-use units corrected}
+%    \hspace{0.5cm}\= \textbf{xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx}\hspace{1cm} \= \textbf{xxxxx}\kill \+
+%    \\ |\amperemetresecond| \>  \amperemetresecond
+%    \\ |\amperepermetre | \> \amperepermetre
+%    \\ |\amperepermetrenp  | \> \amperepermetrenp
+%    \\ |\amperepersquaremetre| \> \amperepersquaremetre
+%    \\ |\amperepersquaremetrenp| \> \amperepersquaremetrenp
+%    \\ |\candelapersquaremetre | \> \candelapersquaremetre
+%    \\ |\candelapersquaremetrenp      | \> \candelapersquaremetrenp
+%    \\ |\coulombpercubicmetre| \> \coulombpercubicmetre
+%    \\ |\coulombpercubicmetrenp| \>  \coulombpercubicmetrenp
+%    \\ |\coulombperkilogram  | \> \coulombperkilogram
+%    \\ |\coulombperkilogramnp | \> \coulombperkilogramnp
+%    \\ |\coulombpermol | \> \coulombpermol
+%    \\ |\coulombpermolnp| \> \coulombpermolnp
+%    \\ |\coulombpersquaremetre| \> \coulombpersquaremetre
+%    \\ |\coulombpersquaremetrenp| \>  \coulombpersquaremetrenp
+%    \\ |\cubicmetre| \> \cubicmetre
+%    \\ |\faradpermetre | \> \faradpermetre
+%    \\ |\faradpermetrenp      | \> \faradpermetrenp
+%    \\ |\graypersecond| \> \graypersecond
+%    \\ |\graypersecondnp| \> \graypersecondnp
+%    \\ |\henrypermetre | \> \henrypermetre
+%    \\ |\henrypermetrenp | \> \henrypermetrenp
+%    \\ |\jouleperkelvin          | \> \jouleperkelvin
+%    \\ |\jouleperkelvinnp  | \> \jouleperkelvinnp
+%    \\ |\jouleperkilogram | \> \jouleperkilogram
+%    \\ |\jouleperkilogramnp | \> \jouleperkilogramnp
+%    \\ |\joulepermole|\> \joulepermole
+%    \\ |\joulepermolenp|\> \joulepermolenp
+%    \\ |\joulepermolekelvin | \> \joulepermolekelvin
+%    \\ |\joulepermolekelvinnp | \> \joulepermolekelvinnp
+%    \\ |\joulepersquaremetre | \> \joulepersquaremetre
+%    \\ |\joulepersquaremetrenp | \> \joulepersquaremetrenp
+%    \\ |\joulepertesla | \> \joulepertesla
+%    \\ |\jouleperteslanp | \> \jouleperteslanp
+%    \\ |\kilogrammetrepersecond          | \> \kilogrammetrepersecond
+%    \\ |\kilogrammetrepersecondnp | \> \kilogrammetrepersecondnp
+%    \\ |\kilogrammetrepersquaresecond | \> \kilogrammetrepersquaresecond
+%    \\ |\kilogrammetrepersquaresecondnp| \> \kilogrammetrepersquaresecondnp
+%    \\ |\kilogrampercubicmetre| \> \kilogrampercubicmetre
+%    \\ |\kilogrampercubicmetrenp| \> \kilogrampercubicmetrenp
+%    \\ |\kilogramperkilomole | \> \kilogramperkilomole
+%    \\ |\kilogramperkilomolenp| \> \kilogramperkilomolenp
+%    \\ |\kilogrampermetre | \> \kilogrampermetre
+%    \\ |\kilogrampermetrenp  | \> \kilogrampermetrenp
+%    \\ |\kilogrampersecond | \> \kilogrampersecond
+%    \\ |\kilogrampersecondnp| \> \kilogrampersecondnp
+%    \\ |\kilogrampersquaremetre | \> \kilogrampersquaremetre
+%    \\ |\kilogrampersquaremetrenp| \> \kilogrampersquaremetrenp
+%    \\ |\kilogrampersquaremetresecond | \> \kilogrampersquaremetresecond
+%    \\ |\kilogrampersquaremetresecondnp| \> \kilogrampersquaremetresecondnp
+%    \\ |\kilogramsquaremetre | \> \kilogramsquaremetre
+%    \\ |\kilogramsquaremetrenp| \> \kilogramsquaremetrenp
+%    \\ |\kilogramsquaremetrepersecond| \> \kilogramsquaremetrepersecond
+%    \\ |\kilogramsquaremetrepersecondnp| \>  \kilogramsquaremetrepersecondnp
+%    \\ |\kilowatthour| \>  \kilowatthour
+%    \\ |\metrepersquaresecond| \>\metrepersquaresecond
+%    \\ |\metrepersquaresecondnp| \>\metrepersquaresecondnp
+%    \\ |\molepercubicmetre| \> \molepercubicmetre
+%    \\ |\molepercubicmetrenp| \> \molepercubicmetrenp
+%    \\ |\newtonpercubicmetre | \> \newtonpercubicmetre
+%    \\ |\newtonpercubicmetrenp | \> \newtonpercubicmetrenp
+%    \\ |\newtonperkilogram | \> \newtonperkilogram
+%    \\ |\newtonperkilogramnp  | \> \newtonperkilogramnp
+%    \\ |\newtonpersquaremetre | \> \newtonpersquaremetre
+%    \\ |\newtonpersquaremetrenp| \> \newtonpersquaremetrenp
+%    \\ |\ohmmetre | \> \ohmmetre
+%    \\ |\pascalsecond| \>  \pascalsecond
+%    \\ |\persquaremetresecond | \> \persquaremetresecond
+%    \\ |\persquaremetresecondnp| \> \persquaremetresecondnp
+%    \\ |\radianpersecond| \>  \radianpersecond
+%    \\ |\radianpersecondnp| \> \radianpersecondnp
+%    \\ |\radianpersquaresecond| \> \radianpersquaresecond
+%    \\ |\radianpersquaresecondnp| \> \radianpersquaresecondnp
+%    \\ |\squaremetre| \> \squaremetre
+%    \\ |\squaremetrepercubicmetre| \> \squaremetrepercubicmetre
+%    \\ |\squaremetrepercubicmetrenp| \> \squaremetrepercubicmetrenp
+%    \\ |\squaremetrepernewtonsecond| \>          \squaremetrepernewtonsecond
+%    \\ |\squaremetrepernewtonsecondnp| \> \squaremetrepernewtonsecondnp
+%    \\ |\squaremetrepersecond | \> \squaremetrepersecond
+%    \\ |\squaremetrepersecondnp          | \> \squaremetrepersecondnp
+%    \\ |\squaremetrepersquaresecond  | \> \squaremetrepersquaresecond
+%    \\ |\squaremetrepersquaresecondnp | \> \squaremetrepersquaresecondnp
+%    \\ |\voltpermetre| \> \voltpermetre
+%    \\ |\voltpermetrenp| \>  \voltpermetrenp
+%    \\ |\wattpercubicmetre | \> \wattpercubicmetre
+%    \\ |\wattpercubicmetrenp| \> \wattpercubicmetrenp
+%    \\ |\wattperkilogram| \> \wattperkilogram
+%    \\ |\wattperkilogramnp| \> \wattperkilogramnp
+%    \\ |\wattpersquaremetre  | \> \wattpersquaremetre
+%    \\ |\wattpersquaremetrenp | \> \wattpersquaremetrenp
+%    \\ |\wattpersquaremetresteradian | \> \wattpersquaremetresteradian
+%    \\ |\wattpersquaremetresteradiannp | \> \wattpersquaremetresteradiannp
+%    \end{tabbing}}
+%
+%    \section{How the package works}
+%    \subsection{Compatibility}
+%    The package has been tested using:
+%    \begin{enumerate}
+%    \item MiK\TeX\ 1.10\textit{b}, including \LaTeXe\ standard classes (\LaTeXe{} [1997/12/01] patch level 1)
+%    and \TeX\ 3.14159, both under Microsoft Windows 95 and MS Windows NT 4.0.
+%    \item MiK\TeX\ 1.11, including \LaTeXe\ standard classes (\LaTeXe{} [1998/06/01])
+%    and \TeX\ 3.14159, both under Microsoft Windows 95 and MS Windows NT 4.0.
+%    \item MiK\TeX\ 2 UP 1, including \LaTeXe\ standard classes (\LaTeXe{} [2000/11/28])
+%    and \TeX\ 3.14159, under Microsoft Windows 2000 professional.
+%    \end{enumerate}
+%    \subsection{Known problems and limitations}
+%    \begin{enumerate}
+%    \item When you don't have the AMS font |eurm10| use the option \opt{noams}.
+%    \item The amssymb package defines the |\square| command. Two possible solutions to avoid
+%    conflicts:
+%    \begin{itemize}
+%    \item Use option \opt{amssymb}: |\usepackage[amssymb]{SIunits}|.
+%    When using this option the amssymb command |\square| is redefined to the SIunits command.
+%    \item Use option \opt{squaren}: |\usepackage[squaren]{SIunits}|.
+%    When using this option the amssymb command |\square| is not redefined. Use the newly defined SIunits command
+%    |\squaren| instead of |\square| to get the desired behaviour.
+%    \end{itemize}
+%    \textbf{Note: }Load \pkgname{SIunits}\ package after \texttt{amssymb} package.
+%    \item The pstricks package defines the |\gray| command. Two possible solutions to avoid
+%    conflicts:
+%    \begin{itemize}
+%    \item Use option \opt{pstricks}: |\usepackage[pstricks]{SIunits}|.
+%    When using this option the pstricks command |\gray| is redefined to the SIunits command.
+%    \item Use option \opt{Gray}: |\usepackage[Gray]{SIunits}|.
+%    When using this option the pstricks command |\gray| is not redefined. Use the newly defined SIunits command
+%    |\Gray| instead of |\gray| to get the desired behaviour.
+%    \end{itemize}
+%    \textbf{Note: }Load \pkgname{SIunits}\ package after \texttt{pstricks} package.
+%    \end{enumerate}
+%    No further known problems or limitations. That doesn't mean this package is bug free, but it
+%    indicates the lack of testing that's been done on the package.
+%
+%    \subsection{Sending a bug report}
+%    Reports of new bugs in the package are most welcome.
+%    However, I do \textbf{not} consider this to be a `supported'
+%    package. This means that there is no guarantee I (or
+%    anyone else) will put any effort into fixing the bug (of course I will try to find some time).
+%    But, on the other hand, someone may try debugging, so filing a
+%    bug report is always a good thing to do! (If nothing else,
+%    your discoveries may end up in future releases of this
+%    document.) Before filing a bug report, please take the
+%    following actions:
+%    \begin{enumerate}
+%    \item Ensure your problem is not due to your input file;
+%    \item Ensure your problem is not due to your own
+%    package(s) or class(es);
+%    \item Ensure your problem is not covered in the section ``Known
+%    problems and limitations'' above;
+%    \item Try to locate the problem by writing a minimal
+%    \LaTeXe\ input file which reproduces the problem. Include the command\\
+%    |\setcounter{errorcontextlines}{999}|\\ in your input;
+%    \item Run your file through \LaTeXe;
+%    \item Send a description of your problem, the input file and the
+%    log file via e-mail to: \texttt{SIunits@webschool.nl}.
+%    \end{enumerate}
+%
+%    \section{In conclusion}
+%    \subsection{Acknowledgements}
+%    I want to thank \textsf{Werenfried Spit} (|w.spit@WITBO.NL|)
+%    answering my question to |TEX-NL@NIC.SURFNET.NL| about the ``power functie'',
+%    as well as \textsf{Hans Hagen} (|pragma@WXS.NL|) for
+%    the kind reaction to that question.
+%    \changes{v0.02 Final Release}{1998/10/09}{Acknowledgements updated}
+%    \begin{labeling}{\hspace{12mm}}
+%    \item[\opt{v0.01}: Typos]
+%    J\"{u}rgen von Haegen (\texttt{vonHagen@engr.psu.edu})
+%    \item[\opt{v0.02 Beta  1}: \cmd{\addunit} macro added]
+%    Hint: Hans Bessem\\ (\texttt{j.m.bessem@wbmt.tudelft.nl})
+%    \item[\opt{v0.02 Beta  4}: Typos]
+%    Rafael Rodriguez Pappalardo (\texttt{rafapa@cica.es})
+%    \item[\opt{v0.02 Beta  5}: Tips/non-SI units]
+%    Timothy C. Burt\\ (\texttt{tcburt@comp.uark.edu})
+%    \item[\opt{v0.02 Beta  7}: \cmd{\angstrom} definition changed]
+%    Hint: Lutz Schwalowsky\\ (\texttt{schalow@mineralogie.uni-hamburg.de});
+%    Solution: Piet van Oostrum (\texttt{piet@cs.uu.nl})
+%    \item[\opt{v0.04}: \cmd{\ohm} definition corrected]
+%    J\"{u}rgen von Haegen (\texttt{vonHagen@engr.psu.edu})
+%    \item[\opt{v0.06}: Conflict with \texttt{amssymb} solved] thanks to
+%    Timothy C. Burt\\ (\texttt{tcburt@comp.uark.edu})
+%    \end{labeling}
+%
+%    \subsection{References}
+%    \begin{enumerate}
+%    \item \textsf{National Institute of Standards and Technology Special Publication 330},\ \textit{The International System of Units (SI), 1991 Edition}, by Barry~N.~Taylor, 62 p.:
+%    |http://physics.nist.gov/Document/sp330.pdf|
+%    \item \textsf{National Institute of Standards and Technology Special Publication 811},\ \textit{Guide for the Use of the International System of Units (SI), 1995 Edition}, by Barry~N.~Taylor, 84 p.:
+%    |http://physics.nist.gov/Document/sp811.pdf|
+%    \item \textsf{National Institute of Standards and Technology},\ \textit{Diagram of SI unit relationships:}
+%    |http://physics.nist.gov/cuu/Units/SIdiagram2.html|
+%    \item \textsf{International Bureau of Weights and Measures (\textit{Bureau International des
+%   Poids et Mesures})},\ \textit{SI brochure:}
+%    |http://www.bipm.fr/pdf/si-brochure.pdf| and \textit{Supplement 2000:}
+%    |http://www.bipm.fr/pdf/si-supplement2000.pdf|
+%    \item \textsf{National Physical Laboratory},
+%    \textit{The International System of Units:} \\ |http://www.npl.co.uk/npl/reference/si_units.html|
+%    \item \textsf{National Institute of Standards and Technology}, \\
+%    \textit{The NIST reference on Constants, Units and Uncertainty:} \\
+%    |http://physics.nist.gov/cuu/Units/introduction.html|
+%    \item \textsf{David Barlett},
+%    \textit{The Metric System: a concise reference guide:} \\ |http://subnet.virtual-pc.com/ba424872/|
+%    \end{enumerate}
+%    \subsection{Bye}
+%    I hope that some users will find the package
+%    useful and not too bugful. :--) \\Comments and suggestions
+%    for improvements are always most welcome!\\*[3mm]
+%    {\itshape \LaTeX, enjoy it! \raisebox{-\baselineskip}[0pt][0pt]{marcel h.}}
+%    \StopEventually{\vfill\hfill\scriptsize Copyright \copyright 2001 Marcel Heldoorn.
+%    \vspace{1cm}
+%
+%
+%    This program may be distributed and/or modified under the
+%    conditions of the LaTeX Project Public License, either version 1.2
+%    of this license or (at your option) any later version.
+%    The latest version of this license is in
+%    |http://www.latex-project.org/lppl.txt|
+%    and version 1.2 or later is part of all distributions of LaTeX
+%    version 1999/12/01 or later.}
+%    \newpage
+%    \section{The Magic Code}
+%    \subsection{Hello world}
+%    \iffalse
+%<*package>
+%    \fi
+%    First, we show the package message.
+%    \begin{macrocode}
+\typeout{\packagemessage}
+%    \end{macrocode}
+%    \subsubsection{Declare globals}
+%    Declare global |\newif|(s) and |\newlength|(s):\\
+%    boolean for redefinition of |\square|
+%    \begin{macrocode}
+\newif\if@redefsquare\@redefsquarefalse
+%    \end{macrocode}
+%    boolean for definition of |\squaren|
+%    \begin{macrocode}
+\newif\if@defsquaren\@defsquarenfalse
+%    \end{macrocode}
+%    boolean for redefinition of |\gray|
+%    \begin{macrocode}
+\newif\if@redefGray\@redefGrayfalse
+%    \end{macrocode}
+%    boolean for definition of |\Gray|
+%    \begin{macrocode}
+\newif\if@defGray\@defGrayfalse
+%    \end{macrocode}
+%    boolean for detection of textstyle option
+%    \begin{macrocode}
+\newif\if@textstyle\@textstylefalse
+%    \end{macrocode}
+%    boolean for detection of binary option
+%    \begin{macrocode}
+\newif\if@optionbinary\@optionbinaryfalse
+%    \end{macrocode}
+%    boolean for detection of NoAMS option
+%    \begin{macrocode}
+\newif\if@optionNoAMS\@optionNoAMSfalse
+%    \end{macrocode}
+%    boolean for detection of |\unit| command
+%    \begin{macrocode}
+\newif\if@inunitcommand\@inunitcommandfalse
+\newlength{\@qskwidth}
+%    \end{macrocode}
+%    boolean for detection of italian option
+%    \begin{macrocode}
+\newif\if@defitalian\@defitalianfalse
+%    \end{macrocode}
+%    \subsubsection{Font handling}
+%    \changes{v0.99}{1999/07/23}{Font handling enhanced.}
+%    When using the option \opt{textstyle} units are printed in the typeface of the
+%    enclosing text, automatically.
+%    \begin{macrocode}
+\DeclareRobustCommand\SI@fstyle[1]{\mathrm{#1}}
+%    \end{macrocode}
+%    \subsubsection{The text sensitive \protect\SImu}
+%    Ripped form the |textcomp| package: the text sensitive --- but ugly --- \SImu\textbf{ \SImu}\textsf{\SImu}\textit{\SImu}.
+%    \begin{macrocode}
+\DeclareTextSymbolDefault{\SImu}{TS1}
+\DeclareTextSymbol{\SImu}{TS1}{181} % micro sign
+\DeclareFontEncoding{TS1}{}{}
+\DeclareFontSubstitution{TS1}{cmr}{m}{n}
+%    \end{macrocode}
+%
+%    \subsubsection{The upright (roman) \ensuremath{\upmu}}
+%    The next lines of code are necessary to get an beautifull upright (roman) \(\upmu\) (Greek `em').
+%    \begin{macrocode}
+\DeclareFontFamily{OML}{eur}{\skewchar\font127} \DeclareFontShape{OML}{eur}{m}{n}{<5> <6>
+                <7> <8> <9> gen * eurm <10><10.95><12><14.4><17.28><20.74><24.88>eurm10}{}
+\DeclareSymbolFont{greek}{OML}{eur}{m}{n}
+%    \end{macrocode}
+%    \begin{macro}{\upmu}
+%    \begin{macrocode}
+\DeclareMathSymbol{\upmu}{\mathord}{greek}{"16}
+%    \end{macrocode}
+%    \end{macro}
+%
+%    \begin{macro}{\SIunits}
+%    The |\SIunits| macro allows runtime option requests. Every argument of
+%    the optional argument list is passed to the macro |\SIunits@execopt|.
+%    The options \opt{thickspace \& thickqspace} is selected by default.
+%
+%    \begin{macrocode}
+\newcommand*\SIunits[1][thickspace,thickqspace]{\@for\SIunits@@:=#1%
+  \do{\SIunits@execopt\SIunits@@}}
+%    \end{macrocode}
+%    \end{macro}
+%
+%    \begin{macro}{\SIunits@execopt}
+%    Every execution of this macro with an argument \(n\) leads to the
+%    execution of a macro |\SIunits@opt@|\(n\) or a warning if no such exists.
+%
+%    \begin{macrocode}
+\newcommand*\SIunits@execopt[1]{\@ifundefined{SIunits@opt@#1}%
+  {\PackageWarning{SIunits}{Requested option `#1' not provided}}%
+  {\@nameuse{SIunits@opt@#1}}}
+%    \end{macrocode}
+%    \end{macro}
+%
+%    \subsection{Runtime options to use with the \cs{SIunits} command}
+%    \subsubsection{\opt{thickspace}}
+%    \begin{macro}{\SIunits@opt@thickspace}
+%    This macro provides a thick math space (|\;|) between units.
+%    \begin{macrocode}
+\newcommand*\SIunits@opt@thickspace{%
+  \@thickspace{runtime option `thickspace' provided!}}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsubsection{\opt{mediumspace}}
+%    \begin{macro}{\SIunits@opt@mediumspace}
+%    This macro provides a medium math space (|\:|) between units.
+%    \begin{macrocode}
+\newcommand*\SIunits@opt@mediumspace{%
+  \@mediumspace{runtime option `mediumspace' provided!}}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsubsection{\opt{thinspace}}
+%    \begin{macro}{\SIunits@opt@thinspace}
+%    This macro provides a thin math space (|\,|) between units.
+%    \begin{macrocode}
+\newcommand*\SIunits@opt@thinspace{%
+  \@thinspace{runtime option `thinspace' provided!}}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsubsection{\opt{cdot}}
+%    \begin{macro}{\SIunits@opt@cdot}
+%    This macro provides a |\cdot| (\(\cdot\)) between units.
+%    \begin{macrocode}
+\newcommand*\SIunits@opt@cdot{%
+  \@cdot{runtime option `cdot' provided!}}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsubsection{\opt{thickqspace}}
+%    \begin{macro}{\SIunits@opt@thickqspace}
+%    This macro provides a thick math space (|\;|) between quantities and units.
+%    \begin{macrocode}
+\newcommand*\SIunits@opt@thickqspace{%
+  \@thickqspace{runtime option `thickqspace' provided!}}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsubsection{\opt{mediumqspace}}
+%    \begin{macro}{\SIunits@opt@mediumqspace}
+%    This macro provides a medium math space (|\:|) between quantities and units.
+%   \changes{v0.07 Beta 1}{1999/04/09}{mediumqspace option corrected}
+%    \begin{macrocode}
+\newcommand*\SIunits@opt@mediumqspace{%
+  \@mediumqspace{runtime option `mediumqspace' provided!}}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsubsection{\opt{thinqspace}}
+%    \begin{macro}{\SIunits@opt@thinqspace}
+%    This macro provides a thin math space (|\;|) between quantities and units.
+%    \begin{macrocode}
+\newcommand*\SIunits@opt@thinqspace{%
+  \@thinqspace{runtime option `thinqspace' provided!}}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsection{text}
+%    \begin{macrocode}
+\DeclareRobustCommand{\@text}{%
+  \ifmmode\expandafter\@text@\else\expandafter\mbox\fi}
+\let\nfss@text\@text%
+\def\@text@#1{\mathchoice%
+  {\textdef@\displaystyle\f@size{#1}}%
+  {\textdef@\textstyle\tf@size{\firstchoice@false #1}}%
+  {\textdef@\textstyle\sf@size{\firstchoice@false #1}}%
+  {\textdef@\textstyle\ssf@size{\firstchoice@false #1}}%
+  \check@mathfonts}%
+\def\textdef@#1#2#3{\hbox{{%
+                    \everymath{#1}%
+                    \let\f@size#2\selectfont%
+                    #3}}}%
+\newif\iffirstchoice@%
+\firstchoice@true%
+\def\stepcounter#1{%
+  \iffirstchoice@%
+     \addtocounter{#1}\@ne%
+     \begingroup \let\@elt\@stpelt \csname cl@#1\endcsname \endgroup
+  \fi%
+}%
+%    \end{macrocode}
+%
+%    \subsection{International needs}
+%    To prevent international problems, one can use both |\meter| and |\metre| for the SI length
+%    unit, and |\deka| and |\dekad| for the SI prefix commands |\deca| and |\decad|.
+%    \begin{macro}{\meter}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\meter}{\metre}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\deka}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\deka}{\deca}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\dekad}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\dekad}{\decad}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsection{Personal needs}
+%    \begin{macro}{\NoAMS}
+%    The |\NoAMS| macro has to be added in the preamble, when you don't have the AMS font |eurm10|
+%    \begin{macrocode}
+\DeclareRobustCommand*{\NoAMS}{\addprefix{\micro}{\mbox{\SImu}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \changes{v0.03 Beta  2}{1998/10/30}{\cs{NoAMS} command added}
+%    \begin{macro}{\addunit}
+%    The |\addunit| and |\addprefix| macros give one the possibility to add units and prefixes. This possibility was added after a lot of
+%    questions for support of non SI units, that can not be added to this package (it's called \textit{SI}units!). \\Usage:
+%    |\addunit{\foot}{ft}|; then the unit can be used: |\unit{1}{\foot}| gives \unit{1}{ft}.
+%    \changes{v0.02 Beta  1}{1998/09/09}{\cs{addunit} command added}
+%    \begin{macrocode}
+\DeclareRobustCommand{\addunit}[2]{\newcommand{#1}{\ensuremath{\SI@fstyle{#2}}}}
+\DeclareRobustCommand{\addprefix}[2]{\newcommand{#1}{\ensuremath{\SI@fstyle{#2}}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\unitskip}
+%    The |\unitskip| macro gives one the possibility to choose spacing characters that
+%    are not already defined, by the spacing options (page \pageref{sec:options}). It also
+%    gives the possibility to use various spacing character in your documents.
+%    \begin{macrocode}
+\DeclareRobustCommand*{\unitskip}[1]{\renewcommand{\usk}{\ensuremath{#1}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\quantityskip}
+%    The |\quantityskip| macro gives one the possibility to choose spacing characters that
+%    are not already defined, by the spacing options (page \pageref{sec:options}). It also
+%    gives the possibility to use various spacing character in your documents.
+%    \begin{macrocode}
+\DeclareRobustCommand*{\quantityskip}[1]{\renewcommand{\@qsk}{\ensuremath{#1}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \changes{v0.03 Beta  2}{1998/10/30}{\cs{quantityskip} command added}
+%    \subsection{Spacing units}
+%    \changes{v0.03 Beta  2}{1998/10/30}{\cs{qsk} command added}
+%    In version \fileversion\ of the \pkgname{SIunits}\ package, one has to do the spacing of units by hand. I have plans to get
+%    some things automated in a future version. The |\per| macro gives |/| to be used in a quotient of two units; |\usk|
+%    (\textbf{u}nit\textbf{sk}ip) makes a thick math space by default, but can be changed by the spacing options
+%    (page \pageref{sec:options}) or the |\unitskip| command. Usage:\\ |\metre\per\second| (unit of speed) gives:
+%    \(\mathrm{m/s}\) \\ |\newton\usk\metre| (unit of torque) gives: \(\joenit{\mathrm{N}.\mathrm{m}}\).\\
+%    |\@qsk| (\textbf{q}uantity \textbf{sk}ip) makes a thick math space
+%    by default, but can be changed by the options for spacing between quantity and unit
+%    (page \pageref{sec:options}) or the |\quantityskip| command. |\@qsk| is used in the |\unit| macro.
+%    \begin{macro}{\per}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\per}{\ensuremath{\SI@fstyle{/}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\usk}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\usk}{\ensuremath{\;}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\@qsk}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\@qsk}{\ensuremath{\;}}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsubsection{(Re)define the spacing commands.}
+%    \changes{v1.20}{2001/06/15}{Solved bug: Defining units using \cs{addunit} in combination with the \opt{cdot} and \opt{textstyle} options, by redefining the \cs{cdot} command. Thanks to Michael M\"{u}ller.}
+%    \begin{macrocode}
+\renewcommand{\cdot}{\,\mbox{\textperiodcentered}\,}
+\newcommand{\@cdot}[1]{\DeclareRobustCommand*{\usk}{\ensuremath{\cdot}}\typeout{#1}}
+\newcommand{\@thickspace}[1]{\DeclareRobustCommand*{\usk}{\ensuremath{\;}}\typeout{#1}}
+\newcommand{\@mediumspace}[1]{\DeclareRobustCommand*{\usk}{\ensuremath{\:}}\typeout{#1}}
+\newcommand{\@thinspace}[1]{\DeclareRobustCommand*{\usk}{\ensuremath{\,}}\typeout{#1}}
+\newcommand{\@thickqspace}[1]{\DeclareRobustCommand*{\@qsk}{\ensuremath{\;}}\typeout{#1}}
+\newcommand{\@mediumqspace}[1]{\DeclareRobustCommand*{\@qsk}{\ensuremath{\:}}\typeout{#1}}
+\newcommand{\@thinqspace}[1]{\DeclareRobustCommand*{\@qsk}{\ensuremath{\,}}\typeout{#1}}
+%    \end{macrocode}
+%
+%    \subsection{Spacing between numerical quantities and unit}
+%    \begin{macro}{\unit}
+%    \changes{v0.99}{2000/02/21}{period in second argument of \cs{unit} automatically spaces the unit using \cs{usk}}
+%    The \cmd{\unit} macro is used to typeset conjunction of a numerical quantity and a unit. Usage:
+%    |\unit{120}{\kilo\meter\per\hour} = \unit{33.3}{\meter\per\second}| to get:
+%    \unit{120}{\kilo\meter\per\hour} = \unit{33.3}{\meter\per\second}.
+%    \changes{v0.05 Beta 1}{1999/02/02}{\cs{unit} command changed, thanks to Nancy Winfree}
+%    \changes{v0.06 Beta 1}{1999/04/01}{\cs{unit} command changed back to v0.04 version, thanks to J\"{u}rgen von Hagen}
+%    \changes{v1.23}{2001/07/21}{\cs{unit} command: parameter \#1 made math by \cs{ensuremath}}
+%    \begin{macrocode}
+{\catcode`\.=13\gdef.{\usk}}
+\newcommand{\period@active}[1]{\begingroup\mathcode`\.="8000\ensuremath{#1}\endgroup}
+\DeclareRobustCommand{\unit}[2]{\@inunitcommandtrue%
+ \ensuremath{\SI@fstyle{#1\@qsk\period@active{#2}}}%
+ \@inunitcommandfalse}
+%    \end{macrocode}
+%    \end{macro}
+%    \changes{v0.03 Beta  3}{1998/11/04}{\cs{unit} command changed}
+%    \changes{v0.03 Beta  2}{1998/10/30}{\cs{unit} command added}
+%    The |\one| macro is defined to be used for quantities of dimension 1 such as mass fraction. Usage:
+%    |\unit{10}{\kilo\gram\per\kilo\gram} = \unit{10}{\one}| to get:
+%    \unit{10}{\kilo\gram\per\kilo\gram} = \unit{10}{\one}.
+%    \begin{macro}{\one}
+%    \begin{macrocode}
+\DeclareRobustCommand{\one}{\settowidth{\@qskwidth}{\@qsk}\hspace*{-\@qskwidth}}
+%    \end{macrocode}
+%    \end{macro}
+%    |\no@qsk| is a negative |\hspace| of length |\@qskwidth| if |\if@inunitcommand| is true, else it does nothing.
+%    \begin{macro}{\no@qsk}
+%    \changes{v1.26}{2001/07/24}{\cs{no@qsk} command changed to get right behaviour with degree, minute, second}
+%    \begin{macrocode}
+\DeclareRobustCommand{\no@qsk}{%
+ \if@inunitcommand%
+  \one%
+ \else%
+  \relax%
+ \fi%
+}
+%    \end{macrocode}
+%    \end{macro}
+%    \changes{v0.99}{1999/11/08}{\cs{one} command added}
+%    \changes{v1.01}{2000/03/16}{exponent of \cs{power} command made textstyle sensitive}
+%    \subsection{Power(full) macros}
+%    \begin{macro}{\power}
+%    The |\power|\footnotemark[1]\footnotetext{Thanks to Werenfried Spit  --- (|w.spit@WITBO.NL|)} macro is used to typeset a superscript. Usage:
+%    |\power{\metre}{2}| to get: m\(^{2}\)
+%    \begin{macrocode}
+\DeclareRobustCommand{\power}[2]{\ensuremath{\SI@fstyle{#1}^{\SI@fstyle{#2}}}}
+%    \end{macrocode}
+%    \end{macro}
+%   \changes{v0.06 Beta 2}{1999/04/06}{amssymb compatibility}
+%   |\square| and |\squaren| are defined |\AtBeginDocument| to detect and prevent conflicts with
+%   packages defining |\square|.
+%    \begin{macro}{\square}
+%    \begin{macrocode}
+\AtBeginDocument{%
+ \if@redefsquare
+  \providecommand{\square}[1]{\power{#1}{2}}
+  \renewcommand{\square}[1]{\power{#1}{2}}
+  \typeout{Option `amssymb' provided! ^^J
+  Command \protect\square\space redefined by SIunits package!}
+  \typeout{}
+ \else
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\squaren}
+%    \begin{macrocode}
+   \if@defsquaren
+    \providecommand{\squaren}[1]{\power{#1}{2}}
+    \renewcommand{\squaren}[1]{\power{#1}{2}}
+    \typeout{Option `squaren' provided! ^^J
+    Command \protect\squaren\space defined by SIunits package!}
+    \typeout{}
+   \else
+    \@ifundefined{square}{%
+     \newcommand*{\square}[1]{\power{#1}{2}}
+     }{%
+     \PackageError{SIunits}{%
+     The command \protect\square\space was already defined.\MessageBreak
+     Possibly due to the amssymb package}%
+     {Hint: use option `amssymb' or `squaren' with SIunits package.\MessageBreak
+     See SIunits.dvi or readme.txt section: Known problems and limitations.}
+    }  %\ifundefined{square}
+   \fi %\if@defsquaren
+ \fi   %\if@redefsquare
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\unita}
+%    \begin{macrocode}
+ \if@defitalian
+ \PackageWarning{SIunits}{Option `italian' provided.\MessageBreak
+                          Command \protect\unit\space defined by babel.\MessageBreak
+                          Mind to use \protect\unita\space instead.}%
+ \DeclareRobustCommand{\unita}[2]{%
+           \@inunitcommandtrue%
+           \ensuremath{\SI@fstyle{#1\@qsk\period@active{#2}}}%
+           \@inunitcommandfalse%
+           }%
+ \fi%\if@defitalian
+}     %\AtBeginDocument
+%    \end{macrocode}
+%    \changes{v1.30}{2002/08/01}{\cs{unita} added to resolve conflict with \texttt{babel} with \opt{italian} language option}
+%    \end{macro}
+%   \changes{v1.08}{2000/05/17}{amssymb compatibility improved}
+%    \begin{macro}{\SI@square}
+%    \changes{v1.29}{2002/07/12}{unwanted space removed (thanks to Svend Tollak Munkejord)}
+%    This internal macro is used in the definitions of the ready-to-use units.
+%    \begin{macrocode}
+\DeclareRobustCommand{\SI@square}[1]
+    {\if@defsquaren%
+      \squaren{#1}%
+        \else
+      \square{#1}%
+     \fi %\if@defsquaren
+    }
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\squared}
+%    The above example can be realised in a more intuitive way: |\square\metre|: m\(^{2}\).
+%    The same goes for |\cubic| \& |\fourth|: m\(^{3}\) \& m\(^{4}\).
+%    \begin{macrocode}
+\DeclareRobustCommand*{\squared}{\ensuremath{^{\mathrm{2}}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\cubic}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\cubic}[1]{\power{#1}{3}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\cubed}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\cubed}{\ensuremath{^{\mathrm{3}}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\fourth}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\fourth}[1]{\power{#1}{4}}
+%    \end{macrocode}
+%    \end{macro}
+%    The macros |\reciprocal|, |\rpsquare|, |\rpsquared|, |\rpcubic|, |\rpcubed| and |\rpfourth| provide the reciprocal (negative power): e.\,g.
+%    m\(^{-1}\), m\(^{-2}\), m\(^{-3}\) and m\(^{-4}\). |\rp| is a short form for |\reciprocal|.
+%    \begin{macro}{\reciprocal}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\reciprocal}[1]{\power{#1}{-1}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\rp}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\rp}{\reciprocal}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\rpsquare}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\rpsquare}[1]{\power{#1}{-2}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\rpsquared}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\rpsquared}{\ensuremath{^{\mathrm{-2}}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\rpcubic}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\rpcubic}[1]{\power{#1}{-3}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\rpcubed}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\rpcubed}{\ensuremath{^{\mathrm{-3}}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\rpfourth}
+%    \begin{macrocode}
+\DeclareRobustCommand*{\rpfourth}[1]{\power{#1}{-4}}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsection{SI decimal \textit{prefixes}}
+%    These prefixes may be used to construct decimal fractions or multiples of units. Two
+%    different forms are provided, e.\,g. |\milli| and |\millid|.
+%    \subsubsection{Symbols}
+%    The first form gives the symbol of the prefix: |\milli\second|: ms;
+%    \begin{macrocode}
+\addprefix{\yocto}{y}
+\addprefix{\zepto}{z}
+\addprefix{\atto}{a}
+\addprefix{\femto}{f}
+\addprefix{\pico}{p}
+\addprefix{\nano}{n}
+\AtBeginDocument{%
+\if@optionNoAMS%
+ \addprefix{\micro}{\mbox{\SImu}}%
+\else%
+  \addprefix{\micro}{\upmu}%
+ \fi%
+\if@textstyle%
+  \DeclareRobustCommand{\micro}{{\ensuremath{\@text{\SImu}}}}%
+\fi}
+\addprefix{\milli}{m}
+\addprefix{\centi}{c}
+\addprefix{\deci}{d}
+\addprefix{\deca}{da}
+\addprefix{\hecto}{h}
+\addprefix{\kilo}{k}
+\addprefix{\mega}{M}
+\addprefix{\giga}{G}
+\addprefix{\tera}{T}
+\addprefix{\peta}{P}
+\addprefix{\exa}{E}
+\addprefix{\zetta}{Z}
+\addprefix{\yotta}{Y}
+%    \end{macrocode}
+%    \subsubsection{Decimal form}
+%    \begin{macro}{decimals}
+%    The other form gives the \textbf{d}ecimal factor: |\kilod\usk\hertz|:
+%    \(\joenit{\kilod.\hertz}\)
+%    \begin{macrocode}
+\DeclareRobustCommand*{\yoctod}{\power{10}{-24}}
+\DeclareRobustCommand*{\zeptod}{\power{10}{-21}}
+\DeclareRobustCommand*{\attod}{\power{10}{-18}}
+\DeclareRobustCommand*{\femtod}{\power{10}{-15}}
+\DeclareRobustCommand*{\picod}{\power{10}{-12}}
+\DeclareRobustCommand*{\nanod}{\power{10}{-9}}
+\DeclareRobustCommand*{\microd}{\power{10}{-6}}
+\DeclareRobustCommand*{\millid}{\power{10}{-3}}
+\DeclareRobustCommand*{\centid}{\power{10}{-2}}
+\DeclareRobustCommand*{\decid}{\power{10}{-1}}
+\DeclareRobustCommand*{\decad}{\power{10}{1}}
+\DeclareRobustCommand*{\hectod}{\power{10}{2}}
+\DeclareRobustCommand*{\kilod}{\power{10}{3}}
+\DeclareRobustCommand*{\megad}{\power{10}{6}}
+\DeclareRobustCommand*{\gigad}{\power{10}{9}}
+\DeclareRobustCommand*{\terad}{\power{10}{12}}
+\DeclareRobustCommand*{\petad}{\power{10}{15}}
+\DeclareRobustCommand*{\exad}{\power{10}{18}}
+\DeclareRobustCommand*{\zettad}{\power{10}{21}}
+\DeclareRobustCommand*{\yottad}{\power{10}{24}}
+%    \end{macrocode}
+%    \subsubsection*{The SI exception}
+%    In the SI, \textit{Base} units and \textit{Derived} units do not have
+%    prefixes, except for the \textit{base} unit of mass: \textit{kilo}gram, not: gram. However,
+%    the macro |\gram| provides the symbol of gram: \gram.
+%    \begin{macro}{\gram}
+%    \begin{macrocode}
+\addunit{\gram}{g}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsection{SI \textit{base} units}
+%    \paragraph{length} metre --- \metre \\
+%    Both |\metre| and |\meter| can be used.
+%    \begin{macro}{\metre}
+%    \begin{macrocode}
+\addunit{\metre}{m}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{mass} kilogram --- \kilogram
+%    \begin{macro}{\kilogram}
+%    \begin{macrocode}
+\addunit{\kilogram}{\kilo\gram}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{time}  second --- \second
+%    \begin{macro}{\second}
+%    \begin{macrocode}
+\addunit{\second}{s}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{electric current} ampere --- \ampere
+%    \begin{macro}{\ampere}
+%    \begin{macrocode}
+\addunit{\ampere}{A}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{thermodynamic temperature} kelvin --- \kelvin
+%    \begin{macro}{\kelvin}
+%    \begin{macrocode}
+\addunit{\kelvin}{K}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{amount of substance} mole --- \mole
+%    \begin{macro}{\mole}
+%    \begin{macrocode}
+\addunit{\mole}{mol}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{luminous intensity} candela --- \candela
+%    \begin{macro}{\candela}
+%    \begin{macrocode}
+\addunit{\candela}{cd}
+%    \end{macrocode}
+%    \end{macro}
+%
+%    \subsection{SI \textit{derived} units}
+%    \paragraph{plane angle} radian --- \radian
+%    \begin{macro}{\radian}
+%    \begin{macrocode}
+\addunit{\radian}{rad}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{solid angle} steradian --- \steradian
+%    \begin{macro}{\steradian}
+%    \begin{macrocode}
+\addunit{\steradian}{sr}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{frequency} hertz --- \hertz
+%    \begin{macro}{\hertz}
+%    \begin{macrocode}
+\addunit{\hertz}{Hz}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{force} newton --- \newton
+%    \begin{macro}{\newton}
+%    \begin{macrocode}
+\addunit{\newton}{N}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{pressure} pascal --- \pascal
+%    \begin{macro}{\pascal}
+%    \begin{macrocode}
+\addunit{\pascal}{Pa}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{energy, work, quantity of heat} joule --- \joule
+%    \begin{macro}{\joule}
+%    \begin{macrocode}
+\addunit{\joule}{J}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{power, radiant flux} watt --- \watt
+%    \begin{macro}{\watt}
+%    \begin{macrocode}
+\addunit{\watt}{W}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{electric charge, quantity of electricity} coulomb -- \coulomb
+%    \begin{macro}{\coulomb}
+%    \begin{macrocode}
+\addunit{\coulomb}{C}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{electrical potential, potential difference, electromotive force} volt --- \volt
+%    \begin{macro}{\volt}
+%    \begin{macrocode}
+\addunit{\volt}{V}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{capacitance} farad --- \farad
+%    \begin{macro}{\farad}
+%    \begin{macrocode}
+\addunit{\farad}{F}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{electrical resistance} ohm --- \ohm
+%    \begin{macro}{\ohm}
+%    \changes{v0.04}{1999/01/22}{\cs{ohm} definition changed (thanks to Juergen von Haegen)}
+%    \begin{macrocode}
+\addunit{\ohm}{\ensuremath{\Omega}}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{electrical conductance} siemens --- \siemens
+%    \begin{macro}{\siemens}
+%    \begin{macrocode}
+\addunit{\siemens}{S}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{magnetic flux, magnetic field strength} weber --- \weber
+%    \begin{macro}{\weber}
+%    \begin{macrocode}
+\addunit{\weber}{Wb}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{magnetic flux density} tesla --- \tesla
+%    \begin{macro}{\tesla}
+%    \begin{macrocode}
+\addunit{\tesla}{T}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{inductance} henry --- \henry
+%    \begin{macro}{\henry}
+%    \begin{macrocode}
+\addunit{\henry}{H}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Celsius temperature} degree Celsius --- \degreecelsius \\ both
+%    |\degreecelsius| and |\celsius| can be used.
+%    \begin{macro}{\degreecelsius}
+%    \begin{macrocode}
+\newcommand{\degreecelsius}{\protect\@inunitcommandfalse\ensuremath{\SI@fstyle{\degree\Celsius}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\celsius}
+%    \begin{macrocode}
+\addunit{\celsius}{\degreecelsius}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{luminous flux} lumen --- \lumen
+%    \begin{macro}{\lumen}
+%    \begin{macrocode}
+\addunit{\lumen}{lm}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{illuminance} lux --- \lux
+%    \begin{macro}{\lux}
+%    \changes{v0.03 Beta  1}{1998/10/23}{\cs{lux} unit corrected: lx }
+%    \begin{macrocode}
+\addunit{\lux}{lx}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{activity of a radionuclide} becquerel --- \becquerel
+%    \begin{macro}{\becquerel}
+%    \begin{macrocode}
+\addunit{\becquerel}{Bq}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{absorbed dose, specific energy imparted, kerma} gray --- \gray \\
+%    |\gray| is defined |\AtBeginDocument|.
+%    \begin{macro}{\gray}
+%    \begin{macrocode}
+\AtBeginDocument{%
+\if@redefGray
+  \providecommand{\gray}{\ensuremath{\SI@fstyle{Gy}}}
+  \renewcommand{\gray}{\ensuremath{\SI@fstyle{Gy}}}
+  \typeout{Option `pstricks' provided! ^^J
+           Command \protect\gray\space redefined by SIunits package!}
+  \typeout{}
+ \else
+   \if@defGray
+    \providecommand{\Gray}{\ensuremath{\SI@fstyle{Gy}}}
+    \renewcommand{\Gray}{\ensuremath{\SI@fstyle{Gy}}}
+    \typeout{Option `Gray' provided! ^^J
+             Command \protect\Gray\space defined by SIunits package!}
+    \typeout{}
+   \else
+    \@ifundefined{gray}{%
+     \newcommand*{\gray}{\ensuremath{\SI@fstyle{Gy}}}
+     }{%
+     \PackageWarningNoLine{SIunits}{%
+     The command \protect\gray\space was already defined.\MessageBreak
+     Possibly due to the pstricks package}
+     \typeout{Hint: use option `pstricks' or `Gray' with SIunits package.}
+     \typeout{See SIunits.dvi or readme.txt section: Known problems and limitations.}
+     \typeout{}
+    }          %\ifundefined{gray}
+   \fi %\if@defGray
+ \fi   %\if@redefGray
+}      %\AtBeginDocument
+%    \changes{v0.99}{1999/09/06}{Conflict between pstricks and \cs{gray} solved}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{dose equivalent} sievert --- \sievert
+%    \begin{macro}{\sievert}
+%    \begin{macrocode}
+\addunit{\sievert}{Sv}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{catalytic activity} katal --- \katal
+%    \begin{macro}{\katal}
+%    \changes{v1.13}{2000/08/29}{unit katal with symbol \katal\ implemented}
+%    \begin{macrocode}
+\addunit{\katal}{kat}
+%    \end{macrocode}
+%    \end{macro}
+
+%    \subsubsection{The \opt{derivedinbase} mode}
+%    \subsection*{Expression of derived SI units in SI base units}
+%    \begin{macro}{\SIunits@opt@derivedinbase}
+%    This macro provides the expression of derived SI units in SI base units.
+%    These macros can be accessed by putting `base' behind the SI derived unit command,
+%    e.\,g. (|\pascalbase|) to get `\pascalbase'.
+%
+%    \begin{macrocode}
+\newcommand*\SIunits@opt@derivedinbase{%
+\typeout{Option 'derivedinbase' provided!^^J}
+\addunit{\radianbase}%
+        {\metre\usk\reciprocal\metre}
+\addunit{\steradianbase}%
+        {\squaremetre\usk\rpsquare\metre}
+\addunit{\hertzbase}%
+        {\reciprocal\second}
+\addunit{\newtonbase}%
+        {\metre\usk\kilogram\usk\second\rpsquared}
+\addunit{\pascalbase}%
+        {\reciprocal\metre\usk\kilogram\usk\second\rpsquared}
+\addunit{\joulebase}%
+        {\squaremetre\usk\kilogram\usk\second\rpsquared}
+\addunit{\wattbase}%
+        {\squaremetre\usk\kilogram\usk\rpcubic\second}
+\addunit{\coulombbase}%
+        {\ampere\usk\second}
+\addunit{\voltbase}%
+        {\squaremetre\usk\kilogram\usk\rpcubic\second\usk\reciprocal\ampere}
+\addunit{\faradbase}%
+        {\rpsquare\metre\usk\reciprocal\kilogram\usk\fourth\second\usk\ampere\squared}
+\addunit{\ohmbase}%
+        {\squaremetre\usk\kilogram\usk\rpcubic\second\usk\rpsquare\ampere}
+\addunit{\siemensbase}%
+        {\rpsquare\metre\usk\reciprocal\kilogram\usk\cubic\second\usk\ampere\squared}
+\addunit{\weberbase}%
+        {\squaremetre\usk\kilogram\usk\second\rpsquared\usk\reciprocal\ampere}
+\addunit{\teslabase}%
+        {\kilogram\usk\second\rpsquared\usk\reciprocal\ampere}
+\addunit{\henrybase}%
+        {\squaremetre\usk\kilogram\usk\second\rpsquared\usk\rpsquare\ampere}
+\addunit{\celsiusbase}%
+        {\kelvin}
+\addunit{\lumenbase}%
+        {\candela\usk\squaremetre\usk\rpsquare\metre}
+\addunit{\luxbase}%
+        {\candela\usk\squaremetre\usk\rpfourth\metre}
+\addunit{\becquerelbase}%
+        {\hertzbase}
+\addunit{\graybase}%
+        {\squaremetre\usk\second\rpsquared}
+\addunit{\sievertbase}%
+        {\graybase}
+\addunit{\katalbase}%
+        {\rp\second\usk\mole }
+}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsubsection{The \opt{derived} mode}
+%    \subsection*{Expression of derived SI units in other derived SI units}
+%    \begin{macro}{\SIunits@opt@derived}
+%    This macro provides the expression of derived SI units in other SI derived units (if possible).
+%    These macros can be accessed by putting `der' in front of the SI derived unit command,
+%    e.\,g. (|\derpascal|) to get `\derpascal'.
+%
+%    \begin{macrocode}
+\newcommand*\SIunits@opt@derived{%
+\addunit{\derradian}%
+        {\metre\usk\reciprocal\metre}
+\addunit{\dersteradian}%
+        {\squaremetre\usk\rpsquare\metre}
+\addunit{\derhertz}%
+        {\reciprocal\second}
+\addunit{\dernewton}%
+        {\metre\usk\kilogram\usk\second\rpsquared}
+\addunit{\derpascal}%
+        {\newton\usk\rpsquare\metre}
+\addunit{\derjoule}%
+        {\newton\usk\metre}
+\addunit{\derwatt}%
+        {\joule\usk\reciprocal\second}
+\addunit{\dercoulomb}%
+        {\ampere\usk\second}
+\addunit{\dervolt}%
+        {\watt\usk\reciprocal\ampere}
+\addunit{\derfarad}%
+        {\coulomb\usk\reciprocal\volt}
+\addunit{\derohm}%
+        {\volt\usk\reciprocal\ampere}
+\addunit{\dersiemens}%
+        {\ampere\usk\reciprocal\volt}
+\addunit{\derweber}%
+        {\squaremetre\usk\kilogram\usk\second\rpsquared\usk\reciprocal\ampere}
+\addunit{\dertesla}%
+        {\weber\usk\rpsquare\metre}
+\addunit{\derhenry}%
+        {\weber\usk\reciprocal\ampere}
+\addunit{\dercelsius}%
+        {\kelvin}
+\addunit{\derlumen}%
+        {\candela\usk\steradian}
+\addunit{\derlux}%
+        {\lumen\usk\rpsquare\metre}
+\addunit{\derbecquerel}%
+        {\derhertz}
+\addunit{\dergray}%
+        {\joule\usk\reciprocal\kilogram}
+\addunit{\dersievert}%
+        {\dergray}
+\addunit{\derkatal}%
+        {\katalbase}
+     \typeout{Option `derived' provided!}}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsection{Units that are used with the SI}
+%    \paragraph{Time} minute --- \minute; hour --- \hour; day --- \dday \\ |\day| was already defined, so use |\dday|.
+%    \begin{macro}{\minute}
+%    \begin{macrocode}
+\addunit{\minute}{min}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\hour}
+%    \begin{macrocode}
+\addunit{\hour}{h}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\dday}
+%    \begin{macrocode}
+\addunit{\dday}{d}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Plane angle} degree --- \degree; minute --- \paminute; second --- \arcsecond \\ |\minute| and |\second| were already defined.
+%    \begin{macro}{\degree}
+%    \changes{v0.99}{1999/11/05}{\cs{arcsecond} and \cs{arcminute} added.}
+%    \begin{macrocode}
+\addunit{\degree}{\no@qsk\ensuremath{^{\circ}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\paminute}
+%    \begin{macrocode}
+\addunit{\paminute}{\no@qsk\ensuremath{'}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\arcminute}
+%    \begin{macrocode}
+\addunit{\arcminute}{\no@qsk\ensuremath{'}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\pasecond}
+%    \begin{macrocode}
+\addunit{\pasecond}{\no@qsk\ensuremath{''}}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\arcsecond}
+%    \begin{macrocode}
+\addunit{\arcsecond}{\no@qsk\ensuremath{''}}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Mass} metric ton or tonne --- \ton
+%    \begin{macro}{\ton}
+%    \begin{macrocode}
+\addunit{\ton}{t}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\tonne}
+%    \begin{macrocode}
+\addunit{\tonne}{t}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Volume} litre --- \litre; liter --- \liter
+%    \begin{macro}{\liter}
+%    \begin{macrocode}
+\addunit{\liter}{L}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\litre}
+%    \begin{macrocode}
+\addunit{\litre}{l}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\neper}
+%    \begin{macrocode}
+\addunit{\neper}{Np}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\bel}
+%    \begin{macrocode}
+\addunit{\bel}{B}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Radioactivity} curie --- \curie
+%    \begin{macro}{\curie}
+%    \begin{macrocode}
+\addunit{\curie}{Ci}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Absorbed dose} rad --- \rad \\ When there is risk of confusion with the symbol for radian (\radian), \arad\ may be used as the symbol for rad.
+%    \begin{macro}{\rad}
+%    \begin{macrocode}
+\addunit{\rad}{rad}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\arad}
+%    \begin{macrocode}
+\addunit{\arad}{rd}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Dose equivalent} rem --- \rem
+%    \begin{macro}{\rem}
+%    \begin{macrocode}
+\addunit{\rem}{rem}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Exposure roentgen} roentgen--- \roentgen
+%    \begin{macro}{\roentgen}
+%    \begin{macrocode}
+\addunit{\roentgen}{R}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Energy} electronvolt --- \electronvolt
+%    \begin{macro}{\electronvolt}
+%    \begin{macrocode}
+\addunit{\electronvolt}{e\volt}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Unified atomic mass unit} atomic mass --- \atomicmass
+%    \begin{macro}{\atomicmass}
+%    \begin{macrocode}
+\addunit{\atomicmass}{u}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Area} are --- \are; hectare --- \hectare; barn --- \barn
+%    \begin{macro}{\are}
+%    \begin{macrocode}
+\addunit{\are}{a}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\hectare}
+%    \begin{macrocode}
+\addunit{\hectare}{\hecto\are}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\barn}
+%    \begin{macrocode}
+\addunit{\barn}{b}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Pressure} bar --- \bbar
+%    \begin{macro}{\bbar}
+%    \begin{macrocode}
+\addunit{\bbar}{bar}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Acceleration} gal --- \gal
+%    \begin{macro}{\gal}
+%    \begin{macrocode}
+\addunit{\gal}{Gal}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Length} \aa ngstr\"{o}m --- \angstrom
+%    \changes{v0.02 Beta  7}{1998/10/01}{\cs{angstrom} changed; thanks to Lutz Schwalowsky}
+%    \begin{macro}{\angstrom}
+%    \begin{macrocode}
+\addunit{\angstrom}{\mbox{{\AA}}}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Rotational frequency} revolutions per minute --- \rperminute; revolutions per second --- \rpersecond
+%    \begin{macro}{\rperminute}
+%    \begin{macrocode}
+\addunit{\rperminute}{r\per\minute}
+%    \end{macrocode}
+%    \end{macro}
+%    \begin{macro}{\rpersecond}
+%    \begin{macrocode}
+\addunit{\rpersecond}{r\per\second}
+%    \end{macrocode}
+%    \end{macro}
+%
+%    \subsection{SI units with compound names}
+%    \paragraph{Area} square metre --- \squaremetre
+%    \begin{macro}{\squaremetre}
+%    \begin{macrocode}
+\addunit{\squaremetre}{\SI@square\metre}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{Volume} cubic metre --- \cubicmetre
+%    \begin{macro}{\cubicmetre}
+%    \begin{macrocode}
+\addunit{\cubicmetre}{\cubic\metre}
+%    \end{macrocode}
+%    \end{macro}
+%    \subsection{Various ready-to-use units}
+%    These units are provided for the ease of the users of the \pkgname{SIunits}\ package. Normally, two
+%    forms of the units are provided, e.\,g. |\graypersecond| and |\graypersecondnp|. The
+%    |command|\textsf{np} form uses negative powers instead of /: `\graypersecond' and
+%    `\graypersecondnp'.\\
+%    \changes{v0.02 Beta  3}{1998/09/11}{\cs{pH} command removed (not in SI)}
+%    \paragraph{absorbed dose rate}
+%    \begin{macrocode}
+\addunit{\graypersecond}{\gray\per\second}
+\addunit{\graypersecondnp}{\gray\usk\reciprocal\second}
+%    \end{macrocode}
+%    \end{macro}
+%    \paragraph{acceleration}
+%    \begin{macrocode}
+\addunit{\metrepersquaresecond}{\metre\per\second\squared}
+\addunit{\metrepersquaresecondnp}{\metre\usk\second\rpsquared}
+%    \end{macrocode}
+%    \paragraph{activation energy, molar energy}
+%    \begin{macrocode}
+\addunit{\joulepermole}{\joule\per\mole}
+\addunit{\joulepermolenp}{\joule\usk\reciprocal\mole}
+%    \end{macrocode}
+%    \paragraph{amount-of-substance concentration}
+%    \begin{macrocode}
+\addunit{\molepercubicmetre}{\mole\per\cubic\metre}
+\addunit{\molepercubicmetrenp}{\mole\usk\rpcubic\metre}
+%    \end{macrocode}
+%    \paragraph{angular acceleration}
+%    \begin{macrocode}
+\addunit{\radianpersquaresecond}{\radian\per\second\squared}
+\addunit{\radianpersquaresecondnp}{\radian\usk\second\rpsquared}
+%    \end{macrocode}
+%    \paragraph{angular momentum}
+%    \begin{macrocode}
+\addunit{\kilogramsquaremetrepersecond}{\kilogram\usk\squaremetre\per\second}
+\addunit{\kilogramsquaremetrepersecondnp}{\kilogram\usk\squaremetre\usk\reciprocal\second}
+%    \end{macrocode}
+%    \paragraph{angular velocity}
+%    \begin{macrocode}
+\addunit{\radianpersecond}{\radian\per\second}
+\addunit{\radianpersecondnp}{\radian\usk\reciprocal\second}
+%    \end{macrocode}
+%    \paragraph{area per unit volume}
+%    \begin{macrocode}
+\addunit{\squaremetrepercubicmetre}{\squaremetre\per\cubic\metre}
+\addunit{\squaremetrepercubicmetrenp}{\squaremetre\usk\rpcubic\metre}
+%    \end{macrocode}
+%    \paragraph{catalytic (activity) concentration}
+%    \changes{v1.13}{2000/08/29}{catalytic concentration added}
+%    \begin{macrocode}
+\addunit{\katalpercubicmetre}{\katal\per\cubic\metre}
+\addunit{\katalpercubicmetrenp}{\katal\usk\rpcubic\metre}
+%    \end{macrocode}
+%    \paragraph{charge per mole}
+%    \begin{macrocode}
+\addunit{\coulombpermol}{\coulomb\per\mole}
+\addunit{\coulombpermolnp}{\coulomb\usk\reciprocal\mole}
+%    \end{macrocode}
+%    \paragraph{current density}
+%    \begin{macrocode}
+\addunit{\amperepersquaremetre}{\ampere\per\squaremetre}
+\addunit{\amperepersquaremetrenp}{\ampere\usk\rpsquare\metre}
+%    \end{macrocode}
+%    \paragraph{density}
+%    \begin{macrocode}
+\addunit{\kilogrampercubicmetre}{\kilogram\per\cubic\metre}
+\addunit{\kilogrampercubicmetrenp}{\kilogram\usk\rpcubic\metre}
+%    \end{macrocode}
+%    \paragraph{dynamic fluidity (1/viscosity)}
+%    \begin{macrocode}
+\addunit{\squaremetrepernewtonsecond}{\squaremetre\per\newton\usk\second}
+\addunit{\squaremetrepernewtonsecondnp}{\squaremetre\usk\reciprocal\newton\usk\reciprocal\second}
+%    \end{macrocode}
+%    \paragraph{dynamic viscosity}
+%    \begin{macrocode}
+\addunit{\pascalsecond}{\pascal\usk\second}
+%    \end{macrocode}
+%    \paragraph{electric charge density}
+%    \begin{macrocode}
+\addunit{\coulombpercubicmetre}{\coulomb\per\cubic\metre}
+\addunit{\coulombpercubicmetrenp}{\coulomb\usk\rpcubic\metre}
+%    \end{macrocode}
+%    \paragraph{electric dipole moment}
+%    \begin{macrocode}
+\addunit{\amperemetresecond}{\ampere\usk\metre\usk\second}
+%    \end{macrocode}
+%    \paragraph{electric field strength}
+%    \begin{macrocode}
+\addunit{\voltpermetre}{\volt\per\metre}
+\addunit{\voltpermetrenp}{\volt\usk\reciprocal\metre}
+%    \end{macrocode}
+%    \paragraph{electric flux density}
+%    \begin{macrocode}
+\addunit{\coulombpersquaremetre}{\coulomb\per\squaremetre}
+\addunit{\coulombpersquaremetrenp}{\coulomb\usk\rpsquare\metre}
+%    \end{macrocode}
+%    \paragraph{electrical permittivity}
+%    \begin{macrocode}
+\addunit{\faradpermetre}{\farad\per\metre}
+\addunit{\faradpermetrenp}{\farad\usk\reciprocal\metre}
+%    \end{macrocode}
+%    \paragraph{electrical resistivity}
+%    \begin{macrocode}
+\addunit{\ohmmetre}{\ohm\usk\metre}
+%    \end{macrocode}
+%    \paragraph{energy}
+%    \begin{macrocode}
+\addunit{\kilowatthour}{\kilo\watt\hour}
+%    \end{macrocode}
+%    \paragraph{energy flux}
+%    \begin{macrocode}
+\addunit{\wattpersquaremetre}{\watt\per\squaremetre}
+\addunit{\wattpersquaremetrenp}{\watt\usk\rpsquare\metre}
+%    \end{macrocode}
+%    \paragraph{energy per unit area}
+%    \begin{macrocode}
+\addunit{\joulepersquaremetre}{\joule\per\squaremetre}
+\addunit{\joulepersquaremetrenp}{\joule\usk\rpsquare\metre}
+%    \end{macrocode}
+%    \paragraph{force (body)}
+%    \begin{macrocode}
+\addunit{\newtonpercubicmetre}{\newton\per\cubic\metre}
+\addunit{\newtonpercubicmetrenp}{\newton\usk\rpcubic\metre}
+%    \end{macrocode}
+%    \paragraph{force per unit mass}
+%    \begin{macrocode}
+\addunit{\newtonperkilogram}{\newton\per\kilogram}
+\addunit{\newtonperkilogramnp}{\newton\usk\reciprocal\kilogram}
+%    \end{macrocode}
+%    \paragraph{heat capacity, entropy}
+%    \begin{macrocode}
+\addunit{\jouleperkelvin}{\joule\per\kelvin}
+\addunit{\jouleperkelvinnp}{\joule\usk\reciprocal\kelvin}
+%    \end{macrocode}
+%    \paragraph{heat of combustion, fusion or vaporisation}
+%    \begin{macrocode}
+\addunit{\jouleperkilogram}{\joule\per\kilogram}
+\addunit{\jouleperkilogramnp}{\joule\usk\reciprocal\kilogram}
+%    \end{macrocode}
+%    \paragraph{intensity of ionising radiation}
+%    \begin{macrocode}
+\addunit{\coulombperkilogram}{\coulomb\per\kilogram}
+\addunit{\coulombperkilogramnp}{\coulomb\usk\reciprocal\kilogram}
+%    \end{macrocode}
+%    \paragraph{kinematic viscosity}
+%    \begin{macrocode}
+\addunit{\squaremetrepersecond}{\squaremetre\per\second}
+\addunit{\squaremetrepersecondnp}{\squaremetre\usk\reciprocal\second}
+%    \end{macrocode}
+%    \paragraph{kinematic energy of turbulence}
+%    \begin{macrocode}
+\addunit{\squaremetrepersquaresecond}{\squaremetre\per\second\squared}
+\addunit{\squaremetrepersquaresecondnp}{\squaremetre\usk\second\rpsquared}
+%    \end{macrocode}
+%    \paragraph{linear momentum}
+%    \begin{macrocode}
+\addunit{\kilogrammetrepersecond}{\kilogram\usk\metre\per\second}
+\addunit{\kilogrammetrepersecondnp}{\kilogram\usk\metre\usk\reciprocal\second}
+%    \end{macrocode}
+%    \paragraph{luminance}
+%    \begin{macrocode}
+\addunit{\candelapersquaremetre}{\candela\per\squaremetre}
+\addunit{\candelapersquaremetrenp}{\candela\usk\rpsquare\metre}
+%    \end{macrocode}
+%    \paragraph{magnetic field strength}
+%    \begin{macrocode}
+\addunit{\amperepermetre}{\ampere\per\metre}
+\addunit{\amperepermetrenp}{\ampere\usk\reciprocal\metre}
+%    \end{macrocode}
+%    \paragraph{magnetic moment}
+%    \begin{macrocode}
+\addunit{\joulepertesla}{\joule\per\tesla}
+\addunit{\jouleperteslanp}{\joule\usk\reciprocal\tesla}
+%    \end{macrocode}
+%    \paragraph{magnetic permeability}
+%    \begin{macrocode}
+\addunit{\henrypermetre}{\henry\per\metre}
+\addunit{\henrypermetrenp}{\henry\usk\reciprocal\metre}
+%    \end{macrocode}
+%    \paragraph{mass flow rate}
+%    \begin{macrocode}
+\addunit{\kilogrampersecond}{\kilogram\per\second}
+\addunit{\kilogrampersecondnp}{\kilogram\usk\reciprocal\second}
+%    \end{macrocode}
+%    \paragraph{mass flux}
+%    \begin{macrocode}
+\addunit{\kilogrampersquaremetresecond}{\kilogram\per\squaremetre\usk\second}
+\addunit{\kilogrampersquaremetresecondnp}{\kilogram\usk\rpsquare\metre\usk\reciprocal\second}
+%    \end{macrocode}
+%    \paragraph{mass per unit area}
+%    \begin{macrocode}
+\addunit{\kilogrampersquaremetre}{\kilogram\per\squaremetre}
+\addunit{\kilogrampersquaremetrenp}{\kilogram\usk\rpsquare\metre}
+%    \end{macrocode}
+%    \paragraph{mass per unit length}
+%    \begin{macrocode}
+\addunit{\kilogrampermetre}{\kilogram\per\metre}
+\addunit{\kilogrampermetrenp}{\kilogram\usk\reciprocal\metre}
+%    \end{macrocode}
+%    \paragraph{molar heat capacity, molar entropy}
+%    \begin{macrocode}
+\addunit{\joulepermolekelvin}{\joule\per\mole\usk\kelvin}
+\addunit{\joulepermolekelvinnp}{\joule\usk\reciprocal\mole\usk\reciprocal\kelvin}
+%    \end{macrocode}
+%    \paragraph{molecular weight}
+%    \begin{macrocode}
+\addunit{\kilogramperkilomole}{\kilogram\per\kilo\mole}
+\addunit{\kilogramperkilomolenp}{\kilogram\usk\kilo\reciprocal\mole}
+%    \end{macrocode}
+%    \paragraph{moment of inertia}
+%    \begin{macrocode}
+\addunit{\kilogramsquaremetre}{\kilogram\usk\squaremetre}
+\addunit{\kilogramsquaremetrenp}{\kilogramsquaremetre}
+%    \end{macrocode}
+%    \paragraph{momentum flow rate}
+%    \begin{macrocode}
+\addunit{\kilogrammetrepersquaresecond}{\kilogram\usk\metre\per\second\squared}
+\addunit{\kilogrammetrepersquaresecondnp}{\kilogram\usk\metre\usk\second\rpsquared}
+%    \end{macrocode}
+%    \paragraph{momentum flux}
+%    \begin{macrocode}
+\addunit{\newtonpersquaremetre}{\newton\per\squaremetre}
+\addunit{\newtonpersquaremetrenp}{\newton\usk\rpsquare\metre}
+%    \end{macrocode}
+%    \paragraph{photon emission rate}
+%    \begin{macrocode}
+\addunit{\persquaremetresecond}{1\per\squaremetre\usk\second}
+\addunit{\persquaremetresecondnp}{\rpsquare\metre\usk\reciprocal\second}
+%    \end{macrocode}
+%    \paragraph{power per unit mass}
+%    \begin{macrocode}
+\addunit{\wattperkilogram}{\watt\per\kilogram}
+\addunit{\wattperkilogramnp}{\watt\usk\reciprocal\kilogram}
+%    \end{macrocode}
+%    \paragraph{power per unit volume}
+%    \begin{macrocode}
+\addunit{\wattpercubicmetre}{\watt\per\cubic\metre}
+\addunit{\wattpercubicmetrenp}{\watt\usk\rpcubic\metre}
+%    \end{macrocode}
+%    \paragraph{radiance}
+%    \begin{macrocode}
+\addunit{\wattpersquaremetresteradian}{\watt\per\squaremetre\usk\steradian}
+\addunit{\wattpersquaremetresteradiannp}{\watt\usk\rpsquare\metre\usk\rp\steradian}
+%    \end{macrocode}
+%    \paragraph{specific heat capacity}
+%    \begin{macrocode}
+\addunit{\jouleperkilogramkelvin}{\joule\per\kilogram\usk\kelvin}
+\addunit{\jouleperkilogramkelvinnp}{\joule\usk\reciprocal\kilogram\usk\reciprocal\kelvin}
+%    \end{macrocode}
+%    \paragraph{specific surface}
+%    \begin{macrocode}
+\addunit{\squaremetreperkilogram}{\squaremetre\per\kilogram}
+\addunit{\rpsquaremetreperkilogram}{\squaremetre\usk\reciprocal\kilogram}
+%    \end{macrocode}
+%    \paragraph{specific volume}
+%    \begin{macrocode}
+\addunit{\cubicmetreperkilogram}{\cubic\metre\per\kilogram}
+\addunit{\rpcubicmetreperkilogram}{\cubic\metre\usk\reciprocal\kilogram}
+%    \end{macrocode}
+%    \paragraph{surface tension}
+%    \begin{macrocode}
+\addunit{\newtonpermetre}{\newton\per\metre}
+\addunit{\newtonpermetrenp}{\newton\usk\reciprocal\metre}
+%    \end{macrocode}
+%    \paragraph{derived SI unit: \degreecelsius}
+%    \begin{macrocode}
+\addunit{\Celsius}{\ensuremath{\SI@fstyle{C}}}
+%    \end{macrocode}
+%    \paragraph{thermal conductivity}
+%    \begin{macrocode}
+\addunit{\wattpermetrekelvin}{\watt\per\metre\usk\kelvin}
+\addunit{\wattpermetrekelvinnp}{\watt\usk\reciprocal\metre\usk\reciprocal\kelvin}
+%    \end{macrocode}
+%    \paragraph{torque}
+%    \begin{macrocode}
+\addunit{\newtonmetre}{\newton\usk\metre} \addunit{\newtonmetrenp}{\newtonmetre}
+%    \end{macrocode}
+%    \paragraph{turbulence energy dissipation rate}
+%    \begin{macrocode}
+\addunit{\squaremetrepercubicsecond}{\squaremetre\per\cubic\second}
+\addunit{\squaremetrepercubicsecondnp}{\squaremetre\usk\rpcubic\second}
+%    \end{macrocode}
+%    \paragraph{velocity}
+%    \begin{macrocode}
+\addunit{\metrepersecond}{\metre\per\second}
+\addunit{\metrepersecondnp}{\metre\usk\reciprocal\second}
+%    \end{macrocode}
+%    \paragraph{volumetric calorific value}
+%    \begin{macrocode}
+\addunit{\joulepercubicmetre}{\joule\per\cubicmetre}
+\addunit{\joulepercubicmetrenp}{\joule\usk\rpcubic\metre}
+%    \end{macrocode}
+%    \paragraph{volumetric coefficient of expansion}
+%    \begin{macrocode}
+\addunit{\kilogrampercubicmetrecoulomb}{\kilogram\per\cubic\metre\usk\coulomb}
+\addunit{\kilogrampercubicmetrecoulombnp}{\kilogram\usk\rpcubic\metre\usk\reciprocal\coulomb}
+%    \end{macrocode}
+%    \paragraph{volumetric flow rate}
+%    \begin{macrocode}
+\addunit{\cubicmetrepersecond}{\cubicmetre\per\second}
+\addunit{\rpcubicmetrepersecond}{\cubicmetre\usk\reciprocal\second}
+%    \end{macrocode}
+%    \paragraph{volumetric mass flow rate}
+%    \begin{macrocode}
+\addunit{\kilogrampersecondcubicmetre}{\kilogram\per\second\usk\cubicmetre}
+\addunit{\kilogrampersecondcubicmetrenp}{\kilogram\usk\reciprocal\second\usk\rpcubic\metre}
+%    \end{macrocode}
+%  \subsection{Option handling}
+%  \changes{v0.99}{1999/07/23}{LaTeX2e option handling implemented.}
+%    \DescribeMacro{Options}
+%  \subsubsection{\opt{cdot} option}
+%    \begin{macrocode}
+\DeclareOption{cdot}{\@cdot{Option `cdot' provided!}}
+%    \end{macrocode}
+%  \subsubsection{\opt{thickspace} option}
+%    \begin{macrocode}
+\DeclareOption{thickspace}{\@thickspace{Option `thickspace' provided!}}
+%    \end{macrocode}
+%  \subsubsection{\opt{mediumspace} option}
+%    \begin{macrocode}
+\DeclareOption{mediumspace}{\@mediumspace{Option `mediumspace' provided!}}
+%    \end{macrocode}
+%  \subsubsection{\opt{thinspace} option}
+%    \begin{macrocode}
+\DeclareOption{thinspace}{\@thinspace{Option `thinspace' provided!}}
+%    \end{macrocode}
+%  \subsubsection{\opt{thickqspace} option}
+%    \begin{macrocode}
+\DeclareOption{thickqspace}{\@thickqspace{Option `thickqspace' provided!}}
+%    \end{macrocode}
+%  \subsubsection{\opt{mediumqspace} option}
+%    \begin{macrocode}
+\DeclareOption{mediumqspace}{\@mediumqspace{Option `mediumqspace' provided!}}
+%    \end{macrocode}
+%  \subsubsection{\opt{thinqspace} option}
+%    \begin{macrocode}
+\DeclareOption{thinqspace}{\@thinqspace{Option `thinqspace' provided!}}
+%    \end{macrocode}
+%   \subsubsection{\opt{textstyle} option}
+%   Typeset units in text style.
+%    \begin{macrocode}
+\DeclareOption{textstyle}{\renewcommand\SI@fstyle[1]{\@text{\protect#1}}%
+\@textstyletrue%
+\typeout{Option `textstyle' provided!}}
+%    \end{macrocode}
+%    \subsection{compatibility options}
+%    \begin{macrocode}
+\DeclareOption{amssymb}{\@redefsquaretrue%
+\typeout{Option `amssymb' provided!}}
+\DeclareOption{squaren}{\@defsquarentrue%
+\typeout{Option `squaren' provided!}}
+\DeclareOption{pstricks}{\@redefGraytrue%
+\typeout{Option `pstricks' provided!}}
+\DeclareOption{Gray}{\@defGraytrue%
+\typeout{Option `Gray' provided!}}
+\DeclareOption{italian}{\@defitaliantrue%
+\typeout{Option `italian' provided!}}
+%    \end{macrocode}
+%    \changes{v1.30}{2002/08/01}{option \opt{italian} added}
+%    \subsection{Miscellaneous options}
+%    \begin{macrocode}
+\DeclareOption{binary}{\@optionbinarytrue }
+\AtEndOfPackage{\if@optionbinary\RequirePackage{binary}\fi}
+\DeclareOption{derivedinbase}{\SIunits@opt@derivedinbase}
+\DeclareOption{derived}{\SIunits@opt@derived}
+\DeclareOption{noams}{\@optionNoAMStrue%
+\typeout{Option `noams' provided!}}
+%    \end{macrocode}
+%    \subsection{Unknown options}
+%    \begin{macrocode}
+\DeclareOption*{\PackageWarningNoLine{SIunits}{What is `\CurrentOption'?}}
+%    \end{macrocode}
+%  \subsection{The \pkgname{SIunits}\texttt{.cfg} file}
+%  Load the |SIunits.cfg| file.
+%  \changes{v0.03 Beta 5}{1998/12/11}{Load optional configuration file `SIunits.cfg'}
+%    \begin{macrocode}
+\InputIfFileExists{SIunits.cfg}{}%
+{\PackageWarningNoLine{SIunits}{You have no `SIunits.cfg' file installed.
+\MessageBreak I will assume you are using `thickspace' and `thickqspace'}
+\ExecuteOptions{thickspace,thickqspace}}
+\ProcessOptions\relax
+%</package>
+%    \end{macrocode}
+%    \section{The \texttt{binary.sty} style for binary prefixes and (non-SI) units}
+%    \begin{macrocode}
+%<*binary>
+\AtBeginDocument{%
+\addprefix{\kibi}{Ki} \newcommand{\kibid}{\power{2}{10}}
+\addprefix{\mebi}{Mi} \newcommand{\mebid}{\power{2}{20}}
+\addprefix{\gibi}{Gi} \newcommand{\gibid}{\power{2}{30}}
+\addprefix{\tebi}{Ti} \newcommand{\tebid}{\power{2}{40}}
+\addprefix{\pebi}{Pi} \newcommand{\pebid}{\power{2}{50}}
+\addprefix{\exbi}{Ei} \newcommand{\exbid}{\power{2}{60}}
+
+\addunit{\bit}{bit}
+\addunit{\byte}{B}%
+} %\AtBeginDocument
+%</binary>
+%    \end{macrocode}
+%    \changes{v1.13}{2000/08/29}{Index and change history generation error fixed}
+%    \changes{v1.29}{2002/08/01}{Index and change history generation errors fixed}
+%
+%    \Finale
+\endinput
diff --git a/Master/texmf-dist/source/latex/SIunits/SIunits.ins b/Master/texmf-dist/source/latex/SIunits/SIunits.ins
new file mode 100644
index 00000000000..f76ae845c76
--- /dev/null
+++ b/Master/texmf-dist/source/latex/SIunits/SIunits.ins
@@ -0,0 +1,70 @@
+%% LaTeX2e file `SIunits.ins'
+%% generated by the `filecontents' environment
+%% from source `SIunits' on 2002/08/01.
+%%
+%%
+%% SIunits.ins will generate the fast loadable files SIunits.sty and
+%% binary.sty, the documentation driver SIunits.drv and the configura-
+%% tion file SIunits.cfg from the package file SIunits.dtx when run
+%% through LaTeX or TeX.
+%%
+%% Copyright (C) 2001          Marcel Heldoorn
+%%
+%% This program may be distributed and/or modified under the
+%% conditions of the LaTeX Project Public License, either version 1.2
+%% of this license or (at your option) any later version.
+%% The latest version of this license is in
+%%   http://www.latex-project.org/lppl.txt
+%% and version 1.2 or later is part of all distributions of LaTeX
+%% version 1999/12/01 or later.
+%%
+%% NOTE:
+%% The LPPL about .ins files:
+%%    - Files with extension `.ins' (installation files): these files may
+%%  not be modified at all because they contain the legal notices
+%%  that are placed in the generated files.
+%%
+%% --------------- start of docstrip commands ------------------
+%%
+\def\batchfile{SIunits.ins}
+\input docstrip.tex
+\keepsilent
+\preamble
+
+Copyright (c) 1998-2002 Marcel Heldoorn <m.heldoorn@webschool.nl>.
+
+This program may be distributed and/or modified under the conditions of the LaTeX Project
+Public License, either version 1.2 of this license or (at your option) any later version.
+The latest version of this license is in http://www.latex-project.org/lppl.txt and
+version 1.2 or later is part of all distributions of LaTeX version 1999/12/01 or later.
+
+For error reports in case of UNCHANGED versions see the readme.txt file.
+
+Please do not request updates from me directly. Distribution is done through the
+Comprehensive TeX Archive Network (CTAN).
+
+\endpreamble
+\postamble
+
+ Source: $Id: SIunits.dtx,v 1.33 2002/08/01 11:20:00 root Exp root $
+\endpostamble
+\generate{\file{SIunits.sty}{\from{SIunits.dtx}{package}}}
+\generate{\file{binary.sty}{\from{SIunits.dtx}{binary}}}
+\nopreamble
+\generate{\file{SIunits.cfg}{\from{SIunits.dtx}{config}}}
+\generate{\file{SIunits.drv}{\from{SIunits.dtx}{driver}}}
+ \Msg{************************************************************}
+ \Msg{}
+ \Msg{ To finish the installation you have to move the file}
+ \Msg{ `SIunits.sty' (and optionally the file `SIunits.cfg')}
+ \Msg{ into a directory searched by LaTeX.}
+ \Msg{}
+ \Msg{ To type-set the documentation, run the file `SIunits.drv'}
+ \Msg{ through LaTeX.}
+ \Msg{ Process SIunits.idx file by:}
+ \Msg{ \space\space\space\space makeindex -s gind.ist SIunits}
+ \Msg{ Process SIunits.glo file by:}
+ \Msg{ \space\space\space\space makeindex -s gglo.ist -o SIunits.gls SIunits.glo}
+ \Msg{}
+ \Msg{************************************************************}
+\endbatchfile