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% \iffalse meta-comment
%
% Copyright (C) 2006 by Wybo Dekker <wybo@servalys.nl>
% -------------------------------------------------------
%
% This file 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.
%
% \fi
%
% \iffalse
%<*driver>
\ProvidesFile{isodoc.dtx}
%</driver>
%<class>\NeedsTeXFormat{LaTeX2e}[1999/12/01]
%<class>\ProvidesClass{isodoc}%
%<*class>
           [2010/08/25 v0.8 isodoc class for letters and invoices]
%</class>
%<class>\ifx\pdfoutput\undefined\else%
%<class>\ifnum\pdfoutput=1\else\ClassError{isodoc}{Compile me with pdflatex or xelatex!}{}
%<class>\fi\fi
%<*driver>
\documentclass{ltxdoc}
\usepackage[l2tabu,orthodox]{nag}
\usepackage{ctable,pdfpages,paralist,eurosym,sverb,ltablex}
\parindent0pt\parskip1ex
\PageIndex
\IndexPrologue{\section*{Index}}
\newcommand{\FIG}[3]{ % pdfname label caption
  \ctable[label={#2},caption={#3},figure,botcap,framerule=.5pt]{@{}c@{}}{}{%
    \includegraphics[width=\textwidth]{#1}
  }
}
\newcommand{\OPTS}[3]{
  \smallskip\noindent
  \begin{tabularx}{\hsize}{@{}lX@{}}
    \multicolumn{2}{@{}l}{\bfseries #1}\NN
    \multicolumn{2}{@{}p{\hsize}@{}}{#2}\NN\NN
    #3
  \end{tabularx}
}
\def\T#1{\texttt{#1}}
\def\C#1{\texttt{$\mathtt{\backslash}$#1}}
\def\CMP#1{\C{#1}\marginpar{\C{#1}}}
\begin{document}
  \DocInput{isodoc.dtx}
\end{document}
%</driver>
% \fi
%
% \CheckSum{2301}
%
% \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         \~}
%
% \changes{v0.1}{2006/03/18}{Initial version}
% \changes{v0.2}{2007/04/05}{added options phoneprefix, routingno, logoaddress
%                            accountname now optional
%                            accountnumber $\Rightarrow$ accountno
%                            german and french translations corrected
%                            indents removed in header fields
%                            expect printer to have more unprintable border
%                            ascriptiontext $\Rightarrow$ accountnametext for dutch
%                            Interdocument language changes now work;
%                            Vatno, if defined, is reported with accountdata;
%                            country in returnaddress now separated with dot;
%                            option changes kept local to the letter/invoice;
%                            English/American accountname text adapted
%                           }
% \changes{v0.3}{2007/08/21}{several errors in documentation corrected
%                           }
% \changes{v0.3b}{2007/08/21}{non-zero parskip generated whitespace in standard textblocks;
%                             several accept positions fixed,
%                             added option shift,
%                             whitespace problems solved,
%                             added option currency,
%                             added option cityzip - without documentation
%                            }
% \changes{v0.4}{2008/05/01}{options shift, currency, cityzip added
%                            norwegian translations added (thanks Sveinung Heggen)
%                           }
% \changes{v0.5}{2008/07/12}{text misplacement in subject-less letters
%                            corrected
%                            norwegian translations corrected
%                           }
% \changes{v0.6}{2008/07/12}{moved all documentation files in subdirectory doc,
%                            because files appeared to be wrongly placed on the 
%                            TeX Collection DVD
%                            Some minor corrections
%                           }
% \changes{v0.7}{2010/01/02}{using eurosym package instead of marvosym;
%                            using frenchb package instead of french;
%                            added addresswidth option, default stays 2 cols;
%                            changes suggested by Fabrice Niessen (thanks!):
%                            added header/noheader options;
%                            added bodyshift option;
%                            date format can be yyyy-mm-dd or a literal `today';
%                            added forcedate option to enter anything for date;
%                            added foldleft and foldright options, default stays right;
%                            headingcolor, if defined, colors fancy headings;
%                            headcolor, if defined, colors headings in header and footer;
%                            foldmarkcolor, if defined, colors foldmark
%                           }
%
% \DoNotIndex{%
% \ , \", \', \@auxout, \AtBeginDocument, \AtEndDocument, \Cbox, \CurrentOption,
% \DeclareOption, \DescribeMacro, \EUR, \LARGE, \Large, \LoadClass, \ML, \NN,
% \PassOptionsToClass, \ProcessOptions, \RequirePackage, \TPGrid, \Tbox, \\, \^,
% \`, \aa, \addtocounter, \advance, \barsep, \baselineskip, \begin, \bfseries,
% \bgroup, \clearpage, \cmidrule, \colorbox, \csname, \def, \define@key,
% \definecolor, \egroup, \else, \empty, \end, \endcsname, \enspace,
% \expandafter, \fancyhead, \fancyhf, \fi, \filedat, \fileversion,
% \footnotesize, \geometry, \hfill, \hsize, \hspace, \ht, \if@twoside,
% \ifcase, \ifdim, \ifnum, \ifx, \ignorespaces, \immediate, \includegraphics,
% \lastpage@putlabel, \let, \long, \multicolumn, \newcommand, \newcount,
% \newdimen, \newenvironment, \newif, \newlabel, \noindent, \number, \o, \or,
% \pageref, \pagestyle, \paperheight, \paperwidth, \par, \parindent, \parskip,
% \pdfinfo, \qquad, \quad, \raggedright, \raisebox, \relax,
% \rightskip, \rule, \scriptsize, \scshape, \selectlanguage, \setbox,
% \setcounter, \setkeys, \sffamily, \space, \string, \tbfigures, \textbf,
% \textbullet, \thepage, \thispagestyle, \undefined, \unskip, \usepackage,
% \vbox, \vfill, \vspace, \write
% }
%
% \GetFileInfo{isodoc.dtx}
%
% \title{The \textsf{isodoc} class\thanks{This document
%   corresponds to \textsf{isodoc}~\fileversion, dated \filedate.}\\for
%   letters, invoices, and more}
% \author{Wybo Dekker \\ \texttt{wybo@servalys.nl}}
%
% \maketitle
%
% \begin{abstract}\noindent
% The \texttt{isodoc} class can be used for the preparation of letters,
% invoices, and, in the future, similar documents.
% Documents are set up with options, thus making the class easily adaptable to
% user's wishes and extensible for other document types.
% \\[2ex]
% \textbf{Keywords:} letter, invoice, key/value, \textsc{nen1026}
%
% \end{abstract}
% \tableofcontents
% \section{Introduction}
%
% This class is intended to be used for the preparation of letters and
% invoices. Its starting point was Victor Eijkhout's NTG
% {\texttt{brief}} class\footnote{CTAN: ntgclass/briefdoc.pdf}, which
% implements the \textsc{nen 1026} standard. The \texttt{brief} class
% does not provide facilities for invoices and it is not easily
% extensible.
%
% The goal for the \texttt{isodoc} class is to be extensible and easy to
% use by providing \textsl{key=value} configuration. Furthermore, texts
% that need to be placed on prescribed positions on the page (there are
% many such texts) are positioned by using the {\texttt{textpos}}
% package.\footnote{CTAN: textpos/textpos.pdf} This provides a very
% robust construction of the page.
%
% The class itself contains many general definitions, but variable data, such as
% opening, closing,
% address and many more, have to be defined using \textsl{key=value}
% definitions, either in the document or
% in a style file. The latter is indicated for definitions that don't vary on a
% per document basis, such as your company name, address, email address and so
% on. Thus if you run a company and also are the secretary of a club,
% you would have style files for each of them, plus one for your private letters
% or invoices.\footnote{If you archive your documents in their source form
% only, it may be wise to work without a style file and set all options in the
% document itself!}
%
% The general setup of a document producing one or more letters is (see
% figures~\ref{letter1}--\ref{logo2}, page~\pageref{logo1}--\pageref{logo2},
% for examples):
% \begin{verbatim}
%     \documentclass{isodoc}
%     \usepackage{<somestyle>}
%     \setupdocument{<generaloptions>}
%     \begin{document}
%     \letter[<addressee_specific_options>]{<letter_content>}
%     ... more \letter calls ...
%     \end{document}
% \end{verbatim}
% Similarly, the general setup of a document producing one or more invoices is
% (figure~\ref{invoice}, page~\pageref{invoice}):
% \begin{verbatim}
%     \documentclass{isodoc}
%     \usepackage{<somestyle>}
%     \setupdocument{<generaloptions>}
%     \begin{document}
%     \invoice[<addressee_specific_options>]{<invoice_content>}
%     ... more \invoice calls ...
%     \end{document}
% \end{verbatim}
%
% \section{Options}
%
% Options are given as key=value pairs, separated by comma's.
% Extra comma's, including one behind the last pair, don't hurt.
% An option argument should be enclosed in braces if it contains
% comma's or equals signs.
%
% As shown in the two examples in the previous section, there are three commands
% that can set options: |\setupdocument|, |\letter|, and |\invoice|.
% These commands will be further explained in the \textsl{Commands} section.
% |\setupdocument| is normally used to set options that are common to all
% letters or invoices in the document, like your company data; the optional 
% arguments of |\letter| and |\invoice| set only those options
% that are different for each letter or invoice, such as the |to|
% and |opening| options.
%
% This section lists and explains all available options.
% All options can be used in both the style files and in the document
% source, although several will normally only be used in style files (such as
% |company|) and some only in the document source (such as |to| or |opening|).
%
% \OPTS{Language}{The options described here relate to the language used
% for the isodoc interface (headings, footings, date, banking data and so
% on.) This language is independent of the language you set with the |babel|
% or |polyglossia| packages. So, for example, you can write your document in english and
% use dutch for the interface. Also, use of |babel| or |polyglossia| is not required.
%
% Currently only a few interface languages are defined. As I am not particularly
% strong in the translation of administrative terminology, please feel free to
% send me corrections. And if you don't find your own language here, please send
% me your translations and your language will be added. 
%
% The options below set the language, UKenglish is used by default. Preferably, the |language|
% option should be used; the other options are there for compatibility with earlier versions.}{
% \T{language = ...}   & sets the interface language to any language defined by the class.
%                        Currently these are: UKenglish, USenglish, french, german, dutch, 
%                        italian, spanish, catalan, norsk, serbian\NN
% \T{dutch}            & a synonym for |language = dutch|, \NN
% \T{english}          & a synonym for |language = UKenglish|,\NN
% \T{german}           & a synonym for |language = german|,\NN
% \T{american}         & a synonym for |language = USenglish|,\NN
% \T{french}           & a synonym for |language = french|.\NN
% }
%
% \OPTS{Logo}{Information about the sender is defined here. The logo, by
% default, consists of a large company name on top a rule with, hanging under the rule,
% a contact person's data.
% You can define the latter either explicitly with the \T{logoaddress} option, 
% or let it automatically be created from the contents of the options \T{who}, \T{street},
% \T{prezip}, \T{zip}, \T{city}, \T{country}, and \T{foreign}, as far as you have defined those.
% Definition in parts can be useful if you need
% them elsewhere in your document.}{
% \T{company = ...}    & Your company name as it should appear in the logo (if
%                        you use the default logo) and in the return address
%                        (where it may get overridden by the \T{returnaddress}
%                        keyword.) For private documents, use your name or
%                        nickname here.\NN
% \T{logoaddress = ...}& Contact person's data; use \C{}\C{} commands for line breaks. 
%                        If you don't define this option, the data will be constructed
%                        from the following options.\NN
% \T{who = ...}        & Contact person's name; probably your own name.\NN
% \T{street = ...}     & Street in the sender's address.\NN
% \T{city = ...}       & City in the sender's address.\NN
% \T{zip = ...}        & Zip in the sender's address.\NN
% \T{cityzip}          & Place zip \textsl{after} city, instead of before it (the default).\NN
% \T{country = ...}    & Country in the sender's address. Only used if \T{foreign}
%                        key was used.\NN
% \T{countrycode = ...}& Sender's country code. For The Netherlands: NL\NN
% \T{areacode = ...}   & Sender's area code. For The Netherlands: 31\NN
% \T{foreign}          & Use this key if you send your letter to a foreign
%                        country. With it, your country will be added to
%                        return and logo addresses, your zip code will be
%                        prefixed with your country code, telephone numbers will
%                        be prefixed with +31-- (or whatever your \T{areacode}
%                        option has been set to) instead of just a 0. In
%                        the \C{accountdata} command, it causes \textsc{iban} en
%                        \textsc{bic} code to be included, unless the |localbank|
%                        option is used.\NN
% }
%
% \OPTS{Address window}{The addressee's address is printed in a window. The
% width of the window is two columns (70 mm), and its contents are vertically
% centered in it. There are no limits to the vertical size of the
% window, other than the physical size of the window in the envelopes you use.
% The vertical position of the window's center is set with the \T{addresscenter}
% keyword. Horizontally there are two options: left or right.}{
% \T{leftaddress}       & Places the window over columns 2 and 3; this is the
%                         default.\NN
% \T{rightaddress}      & Places the window over columns 4 and 5.\NN
% \T{addresscenter = ...} & Distance in mm of the center of the window from the top of the
%                         paper; the default value is 63.5 mm, fitting for a DL
%                         envelope for triple folded A4 (110x220mm) with a window
%                         at 50 mm from the top, 30mm high.\footnote{The middle of
%                         the window is at 50+30/2=65 mm from the top of the
%                         envelope; the paper is folded (see the folding options
%                         below) to give the folded paper a tolerance of 1.5mm on
%                         both sides in the envelope, so the address should be
%                         placed 1.5 mm higher at 65-1.5=63.5 mm.}\NN
% \T{addresswidth = ...}& The address window's width. The default is 70 mm (2 columns).\NN
% \T{to = ...}          & The addressee's address. New lines can be introduced with the \C{}\C{}
%                         command; lines longer than 70 mm will cause extra
%                         newlines.\NN\relax
% \T{[no]return}        & Do or don't print a return address on top of the
%                         addressee's address. This is useful if blank window envelopes
%                         are used. The return address is composed from the
%                         contents of the \T{company}, \T{street}, \T{zip}, \T{city}, and
%                         \T{country} keywords; it is printed in a bold
%                         script size sans serif font and is is separated from
%                         the addressee's address with a rule. The country will
%                         only be printed if the \T{foreign} keyword has been used.\NN
% \T{returnaddress = ...}& The return address, if it is composed as just
%                         described, may become too long to fit in the address
%                         window. Or you may want to define a completely
%                         different return address.  With the \T{returnaddress} keyword you can
%                         redefine the return address. Use \C{}\C{} to insert
%                         bullets.\NN
% }
%
% \pagebreak
% \OPTS{Header fields}{Under the address window, a header is printed. The
% page is vertically divided in six columns, one each for the left and right
% margins, and four which, in the header,
% say: \textsl{Your letter of}, \textsl{Your reference}, \textsl{Our reference},
% and \textsl{Date}, each with their respective contents under them. If the
% \T{subject} keyword is used, an extra line starting with \textsl{Subject:} will
% appear, followed by the contents on the same line and over a width of 2.5
% columns. If needed, extra lines will be used.}{
% \T{bodyshift = ...}   & The header starts 98mm from the top of the paper,
%                         but it can be shifted with the |bodyshift| option.\NN
% \T{[no]header}        & The |noheader| option disables all header fields, the
%                         |header| option re-enables them (|header| is the default.)\NN
% \T{yourletter = ...}  & first field in the header: the date of the letter
%                         this document is reaction on; empty by default.\NN
% \T{yourref = ...}     & second field in the header: addressee's reference of the letter
%                         this document is reaction on; empty by default.\NN
% \T{ourref = ...}      & third field in the header: your own reference for
%                         this document.\NN
% \T{date = ...}        & fourth field of the header. The argument must
%                         have the form \T{yyyymmdd} or \T{yyyy-mm-dd}; it will
%                         be translated into a date like ``May 3, 2006'' if the
%                         document language is English, or into its translation
%                         in the actual language. The default value is
%                         `Undefined date', i.e.\ the date of \C{today} is not
%                         the default as this would make the date untraceable
%                         from the document source only. However, you can force
%                         the use of \C{today} by providing the string |today|
%                         for the argument.\NN
% \T{forcedate = ...}   & The restrictions of the |date| option can be overridden by 
%                         using the |forcedate| option instead; you can thus enter
%                         anything you like for the date.\NN
% \T{subject = ...}     & subject of this document; is placed under the other fields,
%                         over the width of the first, second and half of the
%                         third fields.\NN
% }
%
% \OPTS{Opening and Closing}{A letter is started with an opening -- something
% like `Dear John', and ended with a closing -- something like
% `Regards,\T{<newline>}Betty', perhaps with an autograph (or white space) in between.}{
% \T{opening = ...}     & Dear John\NN
% \T{closing = ...}     & Regards\NN
% \T{signature = ...}   & Betty\NN
% \T{autograph = ...}   & \begin{minipage}[t]{\hsize}
%                         This keyword can have one of the 10 values 0--9:\\[-\baselineskip]
%                         \begin{compactitem}
%                         \item [0:] no autograph; the \T{signature} appears right under
%                                 the \T{closing}. This is the default if the \T{autograph} option
%                                 is not used (using it without a value is equivalent to 
%                                 \T{autograph=2}).
%                         \item [1:] generates extra whitespace between
%                                 \T{signature} and \T{closing} for a hand-written
%                                 autograph.  Change with the \T{closingskip} key.
%                         \item [2--9:] inserts one of eight autograph images
%                                 which, with the \C{autograph} command,
%                                 may have been defined in the style file.\\\mbox{}
%                         \end{compactitem}
%                         \end{minipage}
%                         \NN
% \T{enclosures = ...}  & This keyword can be used to add a note, at the end of
%                         the document, which starts with \textbf{Enclosure:}
%                         followed by the value of the keyword. Multiple
%                         enclosures can be separated with \C{}\C{} commands. If
%                         those are found, the starting text will be
%                         \textbf{Enclosures:}.\NN
% \T{closingskip = ...} & white space between signature and closing. The
%                         default is \T{2}\C{baselineskip}.
% }
%
% \OPTS{Footer fields}{Footer fields are shown in the order in which
% they appear below; they are empty by default, and empty
% fields are not displayed.}{
% \T{[no]footer}        & enables or disables printing a page footer; there is room
%                         for upto four fields, if you set five fields, the last
%                         one will appear in the right margin.\NN
% \T{phoneprefix}       & prefix for phone numbers. The default is `0'; will be changed
%                         into `+$<$areacode$>$-' if the \T{foreign} option is used.\NN
% \T{phone = ...}       & if not empty, prints `phone' in the first field of the
%                         page footer, with the contents under it, prefixed with a~0 or,
%                         if the \T{foreign} option was used, the areacode (set with the
%                         \T{areacode} option.) Telephone numbers should thus be entered
%                         without a prefix.\NN
% \T{cellphone = ...}   & same for cellphone...\NN
% \T{fax = ...}         & fax...\NN
% \T{email = ...}       & email...\NN
% \T{website = ...}     & and website.\NN
% }
%
% \OPTS{Folding marks}{Folding marks can be useful, particularly if your address
% window is used to its limits. Correctly folding your letter then prevents
% parts of the address to become invisible because of the letter loosely filling
% the envelope.}{
% \T{nofold}            & Disable folding marks.\NN
% \T{foldleft}          & The folding mark is printed in the left margin.\NN
% \T{foldright}         & The folding mark is printed in the right margin. This is the default.\NN
% \T{fold2}             & Folding mark at about halfway, set for tight fitting
%                         into a 220x162 mm envelope, with a tolerance of 2 mm
%                         at both sides.\NN
% \T{fold3}             & Folding mark at about one third from the top, set for
%                         tight fitting into a 220x110 mm envelope, with a
%                         tolerance of 1.5 mm at both sides.\NN
% \T{fold = ...}        & For non-standard envelopes and paper formats the position
%                         of the folding mark can be set at any position (in mm)
%                         from the top of the paper.
% }
%
% \OPTS{Payment data}{In invoices you probably want to make clear where you want
% your debtor to transfer his money to. You can do so by calling
% the \C{accountdata} command, which generates a little table containing these data.
% The contents of this table can be defined with the following keywords:}{
% \T{term = ...}        & Payment term in days; default is 30.\NN
% \T{currency = ...}    & Currency; default is euro.\NN
% \T{accountno = ...}   & Your bank account number.\NN
% \T{routingno = ...}   & Your bank's routing number. Will not be cited if undefined.\NN
% \T{accountname = ...} & Your bank account's ascription.
%                         Will not be cited if undefined.\NN
% \T{iban = ...}        & Your account's \textsc{iban}...\NN
% \T{bic = ...}         & and \textsc{bic} code; \textsc{iban} and \textsc{bic}
%                         are only reported in invoices to foreign
%                         customers---see the \T{foreign} keyword.\NN
% \T{vatno = ...}       & Your \textsc{vat} reference number, not yet used.\NN
% \T{chamber = ...}     & Your Chamber of Commerce subscription number, not yet
%                         used.\NN
% }
%
% \OPTS{Accept data}{These keys pertain to data needed for accept forms:}{
% \T{acceptaccount = ...}     & Payer's bank account number\NN
% \T{acceptaddress = ...}     & Payer's address lines, separated with \C{}\C{}\NN
% \T{accepteuros = ...}       & Euro part of the amount to be paid\NN
% \T{acceptcents = ...}       & Cents part of the amount to be paid\NN
% \T{acceptdescription = ...} & Description to be quoted on the accept form\NN
% \T{acceptdesc = ...}        & Short version of the description for the
%                               detachable strip of the form to be kept by the payer\NN
% \T{acceptreference = ...}   & Reference\NN
% }
%
% \OPTS{Miscellaneous}{}{
% \T{[no]fill}          & Use the \T{fill} keyword to justify text both left and
%                         right; the default is \T{nofill}: left justification
%                         only.\NN
% \T{shift = ...}       & The many textpositions in isodoc are defined in millimeters, 
%                         but sometimes printers show an aberration in their horizontal
%                         or vertical printing position. You can correct for this with the
%                         \T{shift = x,y} option, where x and y (both 0 by default) shift
%                         the output to the right and down, respectively, in millimeters.\NN
% }
%
% \section{Commands}
% \DescribeMacro{\showkeys}
% The \C{showkeys} command can be useful for debugging. It prints a table
% showing the option keys described in the previous section, and their current values.
%
% \DescribeMacro{\setupdocument}
% Most of the setup, both in the style files and in the documents
% themselves, is done setting options in a call to the class-defined
% |\setupdocument| command. The options can be either a key/value pair, or just
% a key.
% Options with values and those without may occur in any order, with
% the exception of |addresscenter| (see there.)
% Values need
% their surrounding \{\}'s only if they contain any comma's.
% The \textsl{Options} section explains the available options.
%
% Most of the options have a corresponding command with the same name.
% Although not very often, it may sometimes be useful to have those
% commands available. These are the options with a corresponding
% command:\footnote{Note for developers: the table lines below can be
% generated with a ruby script listkeys (included in the distribution):
% |listkeys show|}
%
% \noindent\begin{tabular}{@{}lllll@{}}
% accept            &addresswidth &currency     &ourref        &website    \NN
% acceptaccount     &areacode     &email        &phone         &who        \NN
% acceptaddress     &autograph    &enclosures   &phoneprefix   &yourletter \NN
% acceptcents       &bic          &fax          &returnaddress &yourref    \NN
% acceptdesc        &cellphone                  &rightaddress  &zip        \NN
% acceptdescription &chamber      &forcedate    &routingno     &           \NN
% accepteuros       &city         &iban         &signature     &           \NN
% acceptreference   &closing      &leftaddress  &street        &           \NN
% accountname       &company      &logoaddress  &subject       &           \NN
% accountno         &country      &opening      &term          &           \NN
% addresscenter     &countrycode  &openingcomma &vatno         &           \NN
% \end{tabular}
%
% \noindent So you could write in your letter: ``please send me the money on my bank
% account: |\accountno\| as soon as possible.''
%
% \DescribeMacro{\letter}
% The |\letter| command produces one letter and can be called multiple times. It
% has two arguments. The first argument is optional and must be a list of
% \textsl{key=value} pairs. The options set here are usually those that vary among
% different letters. The second argument contains the letter's content. This
% content will, depending on the options set, automatically be surrounded by an
% opening, a closing, an autograph, a signature and a remark about any
% enclosures. The first page of each letter will be decorated with a logo,
% the addressee's address, a return address,
% various reference fields, a footer, a folding mark---all as defined by
% \textsl{key=value} pairs in |\setupdocument| or in the |\letter| command itself.
%
% The second an following pages will have a heading, quoting the name of the
% addressee and a page number. Examples of letters can be found in the
% section \textsl{Usage: letters}.
%
% \DescribeMacro{\invoice}
% The |\invoice| command is essentially the same as the |\letter| command, except
% that the opening is always ``\textbf{\textsc{invoice}}'', and the content
% (argument 2) is largely composed using the |\itable|, |\iitem|, |\itotal|, and
% |\accountdata| commands described hereafter. Closing, autograph, and signature
% are disabled.
%
% In the Netherlands, invoices can be provided with an accept form on the lower
% third part of the page.  If the |accept| option was used, this accept form
% will be filled with the available data, in the |ocrb| font where needed.
%
% The following commands pertain to invoices:
% \DescribeMacro{\itable}
% The |\itable| command uses |tabularx| to create a two-column table. The
% first column of the table will have the header `Description' (or its
% equivalent in the language selected), the header of the second column says
% `Amount (\EUR)'. The single argument of |\itable| should contain the
% contents of the table and is of the form:
% \begin{verbatim}
%     item 1 & amount 1\NN
%     item 2 & amount 2\NN
%     ...
%     item n & amount n \NN
%     \cmidrule[.05em]{2-2}
%     Total  & amount \NN
% \end{verbatim}
% However, the next two commands may be used to enter these data more cleanly:
%
% \DescribeMacro{\iitem}
% The |\iitem{item}{amount}| command (|iitem| stands for Invoice Item) is
% equivalent to writing |item & amount\NN|.
%
% \DescribeMacro{\itotal}
% The |\itotal{amount}| command (|itotal| stands for Invoice total) is
% equivalent to writing:
% |\cmidrule[.05em]{2-2} Total & amount \NN|, with the additional
% advantage that the word `Total' will be replaced with its equivalent
% in the current language. Thus, the argument to the |\itable|
% command show above can also be written:
% \begin{verbatim}
%     \iitem{item 1}{amount 1}
%     \iitem{item 2}{amount 2}
%     ...
%     \iitem{item n}{amount n}
%     \total{amount}
% \end{verbatim}
% \DescribeMacro{\accountdata}
% The |\accountdata| command prints a little table with accounting information
% needed by the creditor for paying the invoice. It is constructed using the
% values of the options |accountno|, |accountname|, |routingno|, |iban|, and
% |bic|. The latter two are only included if the |foreign| option was used.
%
% \DescribeMacro{\autograph}
% The \C{autograph} command, which will normally appear in a style file,
% serves to define up to eight autographs based
% on \textsc{pdf}, \textsc{jpeg} or \textsc{png} images. One of these
% autographs will be drawn between the closing (\textsl{Best regards})
% and the signature (\textsl{Betty}) if you use the \T{autograph} option
% with a value from 2 through 9. \C{autograph} has 7 arguments:
%
% \begin{tabularx}{\hsize}{@{}rX@{}}
% arg 1:&2,3,...9: autograph number; will be translated internally to define
%        |\autographA|, |\autographB|... |\autographH|\NN
%     2:&scaling factor for the image\NN
%     3:&distance the autograph outdents in the margin\NN
%     4:&vertical position of the baseline of the closing
%        (\textsl{Regards,}) from the top\NN
%     5:&vertical position of the baseline of the signature (\textsl{John
%        Letterwriter}) from the top\NN
%     6:&height of the image\NN
%     7:&the image (jpg, png, pdf...)\NN
% \end{tabularx}
%
% The arguments 3--6 must be dimensions, and for a given autograph image should
% be inferred by inspecting the image with an image manipulation program
% like, for example, the gimp. In the lower left corner of the gimp window,
% select the units of length, move the pointer to the positions where you want
% margin, closing, and signature and to the bottom of the image, read the x, y,
% y and y positions respectively and use those for the argument 3, 4, 5, and 6.
%
% \FIG{letter}{letter1}{Minimal letter example}
%
% \DescribeMacro{\logo}
% The |\logo| command is internally used to define the default logo; you can
% redefine it with |\renewcommand{\logo}{...}|. An example of logo redefinition
% can be found on page~\pageref{logoredef}.
%
% \section{Usage: letters}
%
% Usage of the class is best explained by example.
% \subsection{A simple letter}
% Here is the latex source for a small letter; its result appears in figure~\ref{letter1}:
% \verbinput{letter.txt}
% This source essentially shows three items:
% \begin{compactenum}
% \item the inclusion of a package |mystyle|; we'll come to that shortly.
% \item the command |\setupdocument| called with many \textsl{key=value} arguments, each
% defining one of the texts that go into the letter.
% \item the command |\letter|, enclosing the body of the letter;
% just to give the letter some real body, a small text has
% been included using |\input|.
% \end{compactenum}
% Of course this is not all of the information needed to create a
% letter. For example, there should be a logo, telling the addressee who I am
% and there should be contact information such as my address, telephone number
% and so on. This is where the included |mystyle| package plays its part. Here
% is an example of such a style file:
% \verbinput{mystyle.txt}
% So in the style file, too, |\setupdocument| is used to register
% information that will common to almost all of my letters. The
% |\autograph| command sets up an autograph, based on an image file. Apart
% from the code shown here, a style file can contain definitions for more
% autographs, and a definition for a logo. Without the latter, a default logo is
% produced. Note also that I have included defaults for |opening|, |closing|,
% and |signature| in the style file, and that I did not override those in the
% letter's source.
%
% \FIG{logo1}{logo1}{Long letter example with a non-standard logo, page 1}
% \FIG{logo2}{logo2}{Long letter example with a non-standard logo, page 2}
%
% The letter source example shown above, in combination with this style example,
% compiles to the letter shown in figure~\ref{letter1}.
% This example illustrates some aspects of isodoc:
% \begin{compactitem}
% \item At the top, you see the default letterhead (logo).  You can create your
% own logo by redefining the |\logo| command.
% \item Under it is the address. It has a return address in script sized sans
% serif boldface over
% it, because the |return| key has been used. A return address is useful if you
% send your letters in a standard window envelope. The positioning of the
% address is done in the style file, using the |addresscenter| and |leftaddress| or
% |rightaddress| keywords.
% \item The paper is vertically divided in six equally wide columns. The outer
% two columns are the left and right margins, the second to fifth columns contain
% header and footer fields.
% \item The ``Your reference'' and ``Our reference'' fields have not been set
% (with the |yourref| and |ourref| keys) and therefore stay empty by default,
% the date field has also not been set, but it should be. Therefore, the default
% value is ``Undefined date'', and a warning is issued by a pink background.
% \item A folding mark has been printed in the extreme right margin, such that
% on folding the paper along it, it will correctly fit in a 220 x 110 mm
% envelope; this has been achieved by using the |fold3| key.
% \item In between closing (\textsl{Best regards,}) and signature
% (\textsl{W.H.~Dekker}) an autograph has been placed. This was done by setting
% |autograph=2|. Alternative values are |0| (nothing between closing and
% signature), |1| for white space where an autograph can be placed with a pen
% after printing, or one of the values |2-9|, which may have been associated
% with other autograph images. In this case, I have used an autograph image in
% which I have drawn the boundary box and the \textsl{outdent},
% \textsl{closing}, and \textsl{signature} positions defined in the
% |\autograph| command (see the section \textsl{Commands}) with red lines.
% \item The bottom of the letter has (up to) four fields with contact
% information. This is useful if your logo does not show that information. If it
% does, you can omit these fields by using the |nofooter| key, or by not
% using the |footer| key, depending on the default set in the style file.
% \end{compactitem}
%
% \subsection{Multiple letters, redefined logo}
% Let's try another illustrative example, see figures~\ref{logo1}
% and~\ref{logo2}: we use a modified style file, with a
% redefined logo, so we don't need a page footer; we use preprinted right-windowed
% envelopes, so a return address is not needed. Here is the style file
% (|logostyle.sty|):
% \verbinput{logostyle.txt}
% \label{logoredef}
% \FIG{invoice}{invoice}{Invoice example}
% The letter source does not use the |autograph| key, so the default value of
% |2| is used; we write it in Dutch and use
% a larger text, just to see what happens if more than one page is generated:
% \verbinput{logoletter.txt}
% In this case, the same letter had to be sent to two different people,
% with different openings and addresses of course. So the letter's body
% is separately defined and the |\letter| command is called twice, with
% the same body, but different |to| and |opening| keys.
% Figures~\ref{logo1} and~\ref{logo2} show the first two pages (the
% first letter) of this document, which actually has four pages.
%
% \section{Usage: invoices}
% \subsection{A simple invoice}
% \FIG{accept}{accept}{Invoice example with accept form}
%
% Invoices (can) have the same structure as letters, except that the |\opening|
% isn't ``Dear Somebody'' anymore, but something like ``Invoice''. And the
% |\closing| doesn't say ``Best regards'', but may provide payment information.
% And the body is not a simple text, but a table with descriptions of things to
% be paid, and the corresponding amounts of money.
%
% An example, as usual, is most instructive:
% \verbinput{invoice.txt}
% The result is shown in figure~\ref{invoice}.
%
% \subsection{Invoice with redefined logo}
% When the |accept| option is used, the invoice will be created with an invoice
% form on the lower third part of the page. Here is an example:
% \verbinput{accept.txt}
% Normally such invoices are printed on preprinted paper with an easily
% detachable, perforated form. In this example, the form itself has been
% printed, too. The |graphicx| and |textpos| packages have already been made
% available by the |isodoc| class. Figure~\ref{accept} shows the output of this
% example.
%% \StopEventually{}
%
% \section{Implementation}
% The basis is the |article| class with all options:
%
%    \begin{macrocode}
\DeclareOption*{\PassOptionsToClass{\CurrentOption}{article}}
\ProcessOptions
\LoadClass{article}
%    \end{macrocode}
% We use |\ctable| floats here, and we need |ctable|'s commands for decent
% spacing in tables and more. |ctable| also brings us |array|, |tabularx|,
% |color|, and |xkeyval|. |eurosym| is used for the euro symbol.
%    \begin{macrocode}
\RequirePackage{ctable,eurosym,graphicx,stringstrings,calc}
%    \end{macrocode}
%
% Since the name of the package contains 'iso', make the page A4.
% For textpos, divide the page in 210 columns of 1mm each
% and 297 rows, 1mm each. The page is vertically divided in 6 columns of
% 35mm each: a left margin, 4 fields, and a right margin.
%
%    \begin{macrocode}
\RequirePackage[nofoot,head=\baselineskip]{geometry}
\RequirePackage[absolute,overlay]{textpos}
\geometry{papersize={210mm,297mm},margin=35mm}
\TPGrid{210}{297}
%    \end{macrocode}
% Several colors can be changed, by using the |\definecolor| command;
% the defaults (all black) are set here:\\
% \DescribeMacro{headcolor}
%   \texttt{headcolor:} color for the header and footer field texts\\
% \DescribeMacro{headingcolor}
%   \texttt{headingcolor:} color for the fancy headings\\
% \DescribeMacro{markercolor}
%   \texttt{markercolor:} color for the folding marks
%    \begin{macrocode}
\definecolor{headcolor}{gray}{0}
\definecolor{headingcolor}{gray}{0}
\definecolor{markercolor}{gray}{0}
%    \end{macrocode}
%
% Use fancy headings, except for the first page.
% The heading, on a rule, looks like:\\[2ex]
% To: John Doe (April 1st, 2006)\hfill Page 2 of 3\\[2ex]
%    \begin{macrocode}
\RequirePackage{fancyhdr}
\pagestyle{fancy}
\AtBeginDocument{\addtolength{\headheight}{\baselineskip}}
%    \end{macrocode}
% The |\xxxdoc| commands (like |\dutchdoc|) set the default language via
% |\AtBeginDocument|, but other language changes should be done without that. 
% So we must have a boolean to check if we are in the preamble:
%
%    \begin{macrocode}
\newif\ifpreamble\preambletrue
\AtBeginDocument{\preamblefalse}
%    \end{macrocode}
% Background color for signaling items that should have been defined, but
% weren't:
%    \begin{macrocode}
\definecolor{isodocpink}{rgb}{1,.7,.7}
\def\Undefined#1{\colorbox{isodocpink}{Undefined #1}}
%    \end{macrocode}
% A small sans serif font is used for header and footer field names and the
% sender's address information. The idea is that this is used for all
% pre-printed text on the letter paper.
%    \begin{macrocode}
\def\@hft{\footnotesize\sffamily\color{headcolor}}
%    \end{macrocode}
% \subsection{The options and their defaults}
% \subsubsection{General options}
% The default shift is 0mm,0mm.
% \DescribeMacro{shift}
% The |shift| option moves the output to the right and down:
%    \begin{macrocode}
\def\@xyshift#1,#2@@@{\def\@xshift{#1}\def\@yshift{#2}}
\define@key{isodoc}{shift}{%
  \@xyshift#1@@@
  \AtBeginDocument{\textblockorigin{\@xshift mm}{\@yshift mm}}
}
%    \end{macrocode}
% Several items in the letter/invoice will be different in documents that are to
% be sent abroad; this is set with the |foreign| option, false by default:
% \DescribeMacro{foreign}
%    \begin{macrocode}
\define@key{isodoc}{foreign}[\foreigntrue]{\foreigntrue}
                                           \newif\ifforeign\foreignfalse
%    \end{macrocode}
% \DescribeMacro{cityzip}
% By default, the zip code is typeset before the city.
% The |cityzip| option reverses this:
%    \begin{macrocode}
\define@key{isodoc}{cityzip}[\cityziptrue]{\cityziptrue}
                                           \newif\ifcityzip\cityzipfalse
%    \end{macrocode}
% \DescribeMacro{localbank}
% When the |foreign| option is used, \textsc{iban} and \textsc{bic} codes are
% reported, but this can be suppressed with the |localbank| option: 
%    \begin{macrocode}
\define@key{isodoc}{localbank}[\localbanktrue]{\localbanktrue}
                                           \newif\iflocalbank\localbankfalse
%    \end{macrocode}
% \DescribeMacro{dutch}
% \DescribeMacro{english}
% \DescribeMacro{german}
% \DescribeMacro{american}
% \DescribeMacro{french}
% \DescribeMacro{language}
% The following keys set the language; English, set at the |\EndOfClass| is the
% default.
%    \begin{macrocode}
\define@key{isodoc}{dutch}   []{\isodoc@dutch}
\define@key{isodoc}{english} []{\isodoc@UKenglish}
\define@key{isodoc}{german}  []{\isodoc@german}
\define@key{isodoc}{american}[]{\isodoc@USenglish}
\define@key{isodoc}{french}  []{\isodoc@french}
\define@key{isodoc}{language}{\csname isodoc@#1\endcsname}
%    \end{macrocode}
% \DescribeMacro{fill}
% \DescribeMacro{nofill}
% The default is to have left, but not right justification, allowing for hyphenation
% in extreme cases:
%    \begin{macrocode}
\define@key{isodoc}{fill}  []{\rightskip=1\rightskip}
\define@key{isodoc}{nofill}[]{\rightskip=0mm plus 35mm}
                              \rightskip=0mm plus 35mm
%    \end{macrocode}
% \subsubsection{Logo}
% \DescribeMacro{company}
% \DescribeMacro{logoaddress}
% \DescribeMacro{who}
% \DescribeMacro{street}
% \DescribeMacro{city}
% \DescribeMacro{zip}
% \DescribeMacro{country}
% \DescribeMacro{countrycode}
% The logo, by default, consists of a large company or personal name on top a
% rule, with a contact person's name (probably your own name) and address
% hanging under the rule. 
% Its contents are defined by the following options:
%    \begin{macrocode}
\define@key{isodoc}{company}    {\def\company{#1}}
                                 \def\company{\Undefined{company}}
\define@key{isodoc}{logoaddress}{\def\logoaddress{#1}}
\define@key{isodoc}{who}        {\def\who{#1}}
                                 \def\who{\Undefined{who}}
\define@key{isodoc}{street}     {\def\street{#1}}
                                 \def\street{\Undefined{street}}
\define@key{isodoc}{city}       {\def\city{#1}}
                                 \def\city{\Undefined{city}}
\define@key{isodoc}{country}    {\def\country{#1}}
                                 \def\country{\Undefined{country}}
\define@key{isodoc}{countrycode}{\def\countrycode{#1}}
                                 \def\countrycode{\Undefined{countrycode}}
\define@key{isodoc}{zip}        {\def\zip{#1}}
                                 \def\zip{\Undefined{zip}}
\def\prezip{\ifforeign\countrycode\else\fi}
%    \end{macrocode}
% \subsubsection{Address window}
% \DescribeMacro{leftaddress}
% \DescribeMacro{rightaddress}
% \DescribeMacro{addresscenter}
% \DescribeMacro{addresswidth}
% The address can be positioned vertically with the |addresscenter| option; the
% default is 63.5mm. This is the vertical position of the center of the address.
% Horizontally, the address is positioned either left or right, depending on the
% |leftaddress| or |rightaddress| options being used. In the first case, the
% address start at x=35mm, which is the left margin (the default), and thus in
% line with the first header field, in the second case at 105mm, in line with
% the one-but-last header field.
%    \begin{macrocode}
\define@key{isodoc}{leftaddress} []{\def\xaddress{35}}
                                    \def\xaddress{35}
\define@key{isodoc}{rightaddress}[]{\def\xaddress{105}}
\define@key{isodoc}{addresscenter} {\def\addresscenter{#1}}
                                    \def\addresscenter{63.5}
\define@key{isodoc}{addresswidth}  {\def\addresswidth{#1}}
                                    \def\addresswidth{70}
%    \end{macrocode}
% \DescribeMacro{to}
% The |to| option takes the addressee's address lines. Use |\\| to
% separate lines. The info will be split by |\processto| on the first
% |\\| separator into the addressee's name (|\toname|) and his address
% (|\toaddress|)
% The |\toname| will be reported in the pdf's document properties.
% However, this works only if the |to| key is set, with |\setupdocument|, in the
% preamble. If several letters are composed, |to| is normally set in the
% |\letter| or |\invoice| commands and thus is not seen by the |\hypersetup|,
% which is called |\AtBeginDocument|; so set the defaults to
% |Various people| for the |\toname| and make the address undefined:
%    \begin{macrocode}
\define@key{isodoc}{to}{\processto{#1}}\def\toname{Various people}
                                       \def\toaddress{\Undefined{to}}
\long\def\processto#1{\xproc #1\\@@@\ifx\toaddress\empty
    \else \yproc #1@@@\fi}
\long\def\xproc #1\\#2@@@{\def\toname{#1}\def\toaddress{#2}}
\long\def\yproc #1\\#2@@@{\def\toaddress{#2}}
%    \end{macrocode}
% \DescribeMacro{return}
% \DescribeMacro{noreturn}
% \DescribeMacro{returnaddress}
% The default is to have no return address; but this can be changed by using
% the |return| (either in the style file or in the source) or, if the default
% was changed in the style file, remove it with |noreturn| in the source.
% Company and country names are often too long to fit in the address window. Or
% you may want to define an entirely different return address. The
% |returnaddress| option is provided to redefine the return address:
%    \begin{macrocode}
\define@key{isodoc}{return}     []{\returntrue}
                    \newif\ifreturn\returnfalse
\define@key{isodoc}{noreturn}   []{\returnfalse}
\define@key{isodoc}{returnaddress}{\def\returnaddress{#1}}
%    \end{macrocode}
%
% \subsubsection{Header}
% \DescribeMacro{header}
% \DescribeMacro{noheader}
% A header is switched on or off with the |header| and |noheader| options.
% The default is to have a header.
%    \begin{macrocode}
\define@key{isodoc}{header}  []{\headertrue}
                 \newif\ifheader\headertrue
\define@key{isodoc}{noheader}[]{\headerfalse}
%    \end{macrocode}
% \DescribeMacro{bodyshift}
% The header is the start of the body. It is initially positioned
% at 98mm from the top of the paper, but it can be shifted with
% the |bodyshift| option.
%    \begin{macrocode}
\define@key{isodoc}{bodyshift} {\advance\headerpos#1}
\newcount\headerpos\headerpos=98
\newcount\footerpos\footerpos=275
\newcount\subjectpos
\newcount\openingpos
\newcount\textskip
%    \end{macrocode}
%
% \subsubsection{Footer}
% \DescribeMacro{footer}
% \DescribeMacro{nofooter}
% A footer is switched on or off with the |footer| and |nofooter| options.
% The default is the have no footer.
%    \begin{macrocode}
\define@key{isodoc}{footer}  []{\footertrue}
                 \newif\iffooter\footerfalse
\define@key{isodoc}{nofooter}[]{\footerfalse}
%    \end{macrocode}
% \DescribeMacro{areacode}   
% \DescribeMacro{phone}      
% \DescribeMacro{phoneprefix} 
% \DescribeMacro{cellphone}  
% \DescribeMacro{fax}        
% \DescribeMacro{website}    
% \DescribeMacro{email}      
% If there \textsl{is} a page footer, only those fields will be displayed which are not empty.
% Currently the |phone|, |cellphone|, |fax|, |email| and |website| are
% recognised as possible footer fields. Phone and fax number will be prefixed
% with a 0, unless the |foreign| option was used: then the prefix will be
% `+nn-', where nn is the areacode. The latter is set with the |areacode|
% option, which is `Undefined areacode' by default.
%    \begin{macrocode}
\define@key{isodoc}{areacode}   {\def\areacode{#1}}
                                 \def\areacode{\Undefined{areacode}}
\define@key{isodoc}{phone}      {\def\phone{#1}}
                                 \def\phone{}
\define@key{isodoc}{phoneprefix}{\def\phoneprefix{#1}}
                                 \def\phoneprefix{0}
\define@key{isodoc}{cellphone}  {\def\cellphone{#1}}
                                 \def\cellphone{}
\define@key{isodoc}{fax}        {\def\fax{#1}}
                                 \def\fax{}
\define@key{isodoc}{website}    {\def\website{#1}}
                                 \def\website{}
\define@key{isodoc}{email}      {\def\email{#1}}
                                 \def\email{}
\def\lead{\ifforeign+\areacode-\else\phoneprefix\fi}
%    \end{macrocode}
% \subsubsection{Folding mark}
% \DescribeMacro{nofold}
% The default is to have no folding mark. So start with the folding mark
% position outside the paper boundaries:
%    \begin{macrocode}
\define@key{isodoc}{nofold}[]{\yfold=-1mm}
               \newdimen\yfold\yfold=-1mm
%    \end{macrocode}
% \DescribeMacro{foldleft}
% \DescribeMacro{foldright}
% The folding mark is in the right margin, but it can be moved to the left
% margin with the |foldleft| option, or, if made that the default in your style
% file, back to the right margin with the |foldright| option:
%    \begin{macrocode}
\define@key{isodoc}{foldleft}[]{\xfold=9mm}
               \newdimen\xfold\xfold=201mm
\define@key{isodoc}{foldright}[]{\xfold=201mm}
%    \end{macrocode}
% \DescribeMacro{fold2}
% The envelope for double folded A4 is C5: 162x220mm,
% window 40x110mm, upper left corner at 20x50mm.
% Fold the A4 to have a tolerance of 2mm at top and bottom, by
% putting the fold mark at 162-4=158 mm.
%    \begin{macrocode}
\define@key{isodoc}{fold2}[]{\yfold=158mm}
%    \end{macrocode}
% \DescribeMacro{fold3}
% The envelope for triple folded A4 is DL: 110x220mm,
% Fold the A4 to have a tolerance of 1.5mm at top and bottom, by
% putting the fold mark at 110-3=107mm.
%    \begin{macrocode}
\define@key{isodoc}{fold3}[]{\yfold=107mm}
%    \end{macrocode}
% \DescribeMacro{fold}
% For non-standard envelopes and paper formats the position of the
% folding mark can be set at any position (in mm) from the top of the paper:
%    \begin{macrocode}
\define@key{isodoc}{fold}{\yfold=#1mm}
%    \end{macrocode}
%
% \subsubsection{Header fields}
% There are four header fields, each one quarter of the textwidth wide.
% Under those, if the subject has been defined, a subject line.
% The header position is 98mm by default, but it can be shifted with the |bodyshift| option.
% \DescribeMacro{ourref}
% \DescribeMacro{yourref}
% \DescribeMacro{yourletter}
%    \begin{macrocode}
\define@key{isodoc}{ourref}  {\def\ourref{#1}}
                              \def\ourref{}
\define@key{isodoc}{yourref}   {\def\yourref{#1}}
                              \def\yourref{}
\define@key{isodoc}{yourletter}{\def\yourletter{#1}}
                              \def\yourletter{}
%    \end{macrocode}
% \DescribeMacro{date}
% The date must be entered in either of three formats: yyyy-mm-dd, yyyymmdd
% or the string |today|. Here we check that a correct format is offered and
% that the values for |mm| and |dd| are in the range 1--12 and 1--31 respectively.
% The string |today| sets the date to today's date.
%    \begin{macrocode}
\define@key{isodoc}{date}{\@isomakedate{#1}}
                          \def\date{\Undefined{date}}
%    \end{macrocode}
% \DescribeMacro{forcedate}
% If you know what you do you can substitute anything you like for the date by 
% using the |forcedate| option instead of |date|:
%    \begin{macrocode}
\define@key{isodoc}{forcedate}{\def\forcedate{#1}}\def\forcedate{}
%    \end{macrocode}
% \DescribeMacro{subject}
% The subject is empty by default and will be typeset.
%    \begin{macrocode}
\define@key{isodoc}{subject}{\def\subject{#1}}
                             \def\subject{}
%    \end{macrocode}
% \DescribeMacro{opening}
% \DescribeMacro{openingcomma}
% The opening, something like `Dear Reader', is set by the |opening| option; the
% default is `Undefined opening'. It is followed by a comma, unless the
% |openingcomma| has been used to set it to a different character, like a
% semicolon or an exclamation mark.
%    \begin{macrocode}
\define@key{isodoc}{opening}     {\def\opening{#1}}
                                  \def\openingcomma{,}
\define@key{isodoc}{openingcomma}{\def\openingcomma{#1}}
                                  \def\opening{\Undefined{opening}}
%    \end{macrocode}
% \subsubsection{Closing, autograph, signature}
% \DescribeMacro{closing}
% \DescribeMacro{closingskip}
% The closing, something like `Best regards', is set by the |closing| option;
% the default is `Undefined closing'. It will be preceded by a vertical skip,
% which can be set by the |closingskip| option, which is |2\baselineskip| by
% default:
%    \begin{macrocode}
\define@key{isodoc}{closing}    {\def\closing{#1,}}
                                 \def\closing{\Undefined{closing}} % Best regards,
\define@key{isodoc}{closingskip}{\closingskip=#1}
            \newdimen\closingskip\closingskip=2\baselineskip
%    \end{macrocode}
% \DescribeMacro{autograph}
% The autograph is either just a newline, or a vertical spacing where you can
% put your autograph manually, or a graphic. In the latter case, is must have
% been defined with the macro |\autograph|, which defines an autograph from an
% image, see the section \textsl{User Macros}.
% Not using the |autograph| option is equivalent to |autograph=0| (just a newline).
% Using it without a value is equivalent to |autograph=2| (image inserted):
%    \begin{macrocode}
\define@key{isodoc}{autograph}[2]{\def\autographversion{#1}}
                                  \def\autographversion{0}
%    \end{macrocode}
% \DescribeMacro{signature}
% The signature, something like `John Letterwriter', is set by the |signature| option;
% the default is `Undefined signature'.
%    \begin{macrocode}
\define@key{isodoc}{signature}{\def\signature{#1}}
                               \def\signature{\Undefined{signature}}
%    \end{macrocode}
% \DescribeMacro{enclosures}
% Enclosures are set by the |enclosures| option. There are none by default.
%    \begin{macrocode}
\define@key{isodoc}{enclosures} {\def\enclosures{#1}}
                                 \def\enclosures{}
%    \end{macrocode}
% \subsubsection{Invoice specific data}
% \DescribeMacro{term}
% \DescribeMacro{accountno}  
% \DescribeMacro{routingno}  
% \DescribeMacro{accountname}
% \DescribeMacro{iban}       
% \DescribeMacro{bic}        
% \DescribeMacro{vatno}      
% \DescribeMacro{chamber}    
% \DescribeMacro{currency}   
% Invoices need to state some specific data, like account data and term of
% payment:
%    \begin{macrocode}
\define@key{isodoc}{term}   [30]{\def\term{#1}}
\define@key{isodoc}{accountno}  {\def\accountno{#1}}
\define@key{isodoc}{routingno}  {\def\routingno{#1}}
\define@key{isodoc}{accountname}{\def\accountname{#1}}
\define@key{isodoc}{iban}       {\def\iban{#1}}
\define@key{isodoc}{bic}        {\def\bic{#1}}
\define@key{isodoc}{vatno}      {\def\vatno{#1}}
\define@key{isodoc}{chamber}    {\def\chamber{#1}}
                                 \def\chamber{Undefined{chamber}}
\define@key{isodoc}{currency}   {\def\currency{#1}}
                                 \def\currency{\EUR}
%    \end{macrocode}
% \DescribeMacro{accept}
% \DescribeMacro{acceptaccount}    
% \DescribeMacro{acceptaddress}    
% \DescribeMacro{acceptcents}      
% \DescribeMacro{acceptdescription}
% \DescribeMacro{acceptdesc}       
% \DescribeMacro{accepteuros}      
% \DescribeMacro{acceptreference}  
% If an accept form is to be printed, here are the options to fill in all the
% fields:
%    \begin{macrocode}
\define@key{isodoc}{accept}[E05]{\def\accepttype{#1}
                                 \newfont\ocrb{ocrb10}
                                }
\define@key{isodoc}{acceptaccount}    {\def\acceptaccount{#1}}
                                       \def\acceptaccount{}
\define@key{isodoc}{acceptaddress}    {\def\acceptaddress{#1}}
                                       \def\acceptaddress{}
\define@key{isodoc}{acceptcents}      {\def\acceptcents{#1}}
                                       \def\acceptcents{Undefined{}}
\define@key{isodoc}{acceptdescription}{\def\acceptdescription{#1}}
                                       \def\acceptdescription{}
\define@key{isodoc}{acceptdesc}       {\def\acceptdesc{#1}}
                                       \def\acceptdesc{}
\define@key{isodoc}{accepteuros}      {\def\accepteuros{#1}}
                                       \def\accepteuros{Undefined{}}
\define@key{isodoc}{acceptreference}  {\def\acceptreference{#1}}
                                       \def\acceptreference{Undefined{ref}}
%    \end{macrocode}
% For now, we define field positons for the E05 accept form only; when data for
% other forms become available, the content of |\accepttype| will have to be
% checked. Here is a rough layout of the E05 accept form -- the last character
% tells if the items are tyepset in a Tbox (T) or in a Cbox (C):
% \pagebreak%%%
% \begin{verbatim}
%                                        description       T
% ref                                    description       T
% ref                 euros cents             reference    C
% 
% eur ct                  account                          C
% 
% desc                address                              T
% desc                address
% desc                address
% \end{verbatim}
%    \begin{macrocode}
\def\xacceptdescription{105}\def\yacceptdescription{200}\def\wacceptdescription{100} %T
\def\xacceptref{7}          \def\yacceptref{212}        \def\wacceptref{30}          %T
\def\xaccepteuros{60}       \def\yaccepteuros{216}      \def\waccepteuros{32}        %C
\def\xacceptcents{89}       \def\yacceptcents{216}      \def\wacceptcents{13}        %C
\def\xacceptreference{125}  \def\yacceptreference{216}  \def\wacceptreference{55}    %C
\def\xaccepteur{14.4}       \def\yaccepteur{228.5}      \def\waccepteur{21}          %C
\def\xacceptct{32}          \def\yacceptct{228.5}       \def\wacceptct{9}            %C
\def\xacceptaccount{75}     \def\yacceptaccount{228.5}  \def\wacceptaccount{65}      %C
\def\xacceptdesc{7}         \def\yacceptdesc{241}       \def\wacceptdesc{26}         %T
\def\xacceptaddress{58}     \def\yacceptaddress{241}    \def\wacceptaddress{90}      %T
%    \end{macrocode}
% This is the |\baselineskip| for the two-line reference of the detachable strip:
%    \begin{macrocode}
\newdimen\acceptreferenceskip\acceptreferenceskip=5.15mm
%    \end{macrocode}
% \subsection{User Macros}
% The autograph is either just a newline, or a vertical spacing where you can
% put your autograph manually, or a graphic. In the latter case, is must have
% been defined with the macro |\autograph|, which defines an autograph from an
% image.\footnote{Thanks, Hans Hagen and Piet van  Oostrum, for its definition}\\
% The arguments 3 - 6 can be found by measuring those (with the gimp, for example)
% in the unscaled (raw) image (which is the last argument).
% \\[1ex]
% \begin{tabularx}{\hsize}{@{}rX@{}}
% arg 1:&2,3,...9: autograph number; will be translated internally to define
%        |\autographA|, |\autographB|... |\autographH|\NN
%     2:&scaling factor for the image\NN
%     3:&the distance the autograph outdents in the margin\NN
%     4:&the vertical position of the baseline of the closing (Regards,) from the top\NN
%     5:&the vertical position of the baseline of the signature (John Letterwriter) from the top\NN
%     6:&the height of the image\NN
%     7:&the image (jpg, png, pdf...)\NN
% \end{tabularx}
% \DescribeMacro{\autograph}
%    \begin{macrocode}
\newdimen\myoutdent
\newdimen\signskip
\newdimen\mydown
\def\autograph#1#2#3#4#5#6#7{%
  \ifnum #1<2
    \ClassError{isodoc}{autograph #1 cannot be changed (first arg must be 2..9)}{}
  \fi
  \ifnum #1>9
    \ClassError{isodoc}{autograph #1 cannot be changed (first arg must be 2..9)}{}
  \fi
  \bgroup
  \lccode`2=`A \lccode`6=`E
  \lccode`3=`B \lccode`7=`F
  \lccode`4=`C \lccode`8=`G
  \lccode`5=`D \lccode`9=`H
  \lowercase{\def\temp{#1}}%
  \expandafter\egroup\expandafter\def\csname autograph\temp\endcsname{%
    \myoutdent=#3
    \signskip=#5\advance\signskip-#4
    \mydown=#6\advance\mydown-#4
    \par\hspace*{-#2\myoutdent}%
    \raisebox{-#2\mydown}[0bp][0bp]{\includegraphics[scale=#2]{#7}}\\[-\baselineskip]
    \closing\\[-2\baselineskip]\\[#2\signskip]\signature%
  }
}
%    \end{macrocode}
% \subsubsection{Logo}
% The logo, by default, consists of a large company name on top a rule,
% with a contact person's name (probably your own name) and address
% hanging under the rule. 
% If the osf-txfonts package is used, oldstyle figures are disabled here.
% \DescribeMacro{\logo}
%    \begin{macrocode}
\newcommand{\zippedcity}{\ifcityzip\city\ \prezip\ \zip\else\prezip\ \zip\ \city\fi}
\newcommand{\logo}{%
  { \parskip=0pt\parindent=0pt
    \begin{textblock}{140}[0,1](35,20)%
        \textsf{\LARGE\company}\\[-1.7ex] % large company name
        \rule{\hsize}{.3pt}               % on top a rule
    \end{textblock}
  }
  \Tbox{140}{22}{35}{\noindent
     \footnotesize\sffamily
     \ifx\undefined\logoaddress%
       \ifx\undefined\tbfigures\else\tbfigures\fi
       \ifx\who\empty\else\who\\\fi
       \ifx\street\empty\else\street\\\fi
       \zippedcity
       \ifforeign\\\country\fi
     \else\logoaddress\fi
  }
}
%    \end{macrocode}
% \DescribeMacro{\returnaddress}
%    \begin{macrocode}
\def\returnaddress{%
  \ifx\undefined\tbfigures\else\tbfigures\fi % when using osf-txfonts... just for me
  \company\\
  \street\\
  \zippedcity
  \ifforeign\\\country\fi
}
%    \end{macrocode}
% \DescribeMacro{\setupdocument}
%    \begin{macrocode}
\newcommand{\setupdocument}[1]{
  \setkeys{isodoc}{#1}
  \iffooter\else\geometry{bottom=25mm}\fi
}
%    \end{macrocode}
% \DescribeMacro{\@isomakedate}
%    \begin{macrocode}
\newcount\@isoyear   \@isoyear=\year  \year=0
\newcount\@isomonth \@isomonth=\month
\newcount\@isoday     \@isoday=\day
\def\@isomakedate#1{%
  \def\@isoarg{#1}\def\@isotoday{today}
  \ifx\@isoarg\@isotoday
     \year=\@isoyear
    \month=\@isomonth
      \day=\@isoday
  \else
    \stringlength[q]{\@isoarg}
    \ifnum\theresult=10
      \substring[q]{\@isoarg}{5}{5}
      \if\thestring-\else\ClassError{isodoc}{
        Illegal date separator: \thestring (must be -)}{}\fi
      \substring[q]{\@isoarg}{8}{8}
      \if\thestring-\else\ClassError{isodoc}{
        Illegal date separator: \thestring (must be -)}{}\fi
    \else
      \ifnum\theresult=8\else\ClassError{isodoc}{
        Illegal date: not yyyymmdd | yyyy-mm-dd | today}{}\fi
    \fi
    \Treatments{0}{0}{0}{1}{0}{0}
    \substring[q]{\@isoarg}{1}{$} \let\@isodigits=\thestring \def\@isoarg{\thestring}
    \stringlength[q]{\@isodigits}
    \ifnum\theresult=8\else\ClassError{isodoc}{Illegal date: must have 8 digits}{}\fi
    \substring[q]{\@isoarg}{1}{4}  \year=\thestring \def\@isoarg{\@isodigits}
    \substring[q]{\@isoarg}{5}{6} \month=\thestring \def\@isoarg{\@isodigits}
    \substring[q]{\@isoarg}{7}{8}   \day=\thestring \def\@isoarg{\@isodigits}
    \ifnum \month > 12 \ClassError{isodoc}{Illegal date: month>12}{}\fi
    \ifnum \day   > 31 \ClassError{isodoc}{Illegal date: day>31}{}\fi
  \fi
}
%    \end{macrocode}
% \DescribeMacro{\footfield}
% Create any non-empty footfields, starting at left arguments:
% \begin{compactenum}
% \item fieldlabel
% \item a prefix for the content (for phone numbers)
% \item the content
% \end{compactenum}
%    \begin{macrocode}
\def\footfield#1#2#3{%
  \ifx#3\empty\else
    \Tbox{\footcount}{\footerpos}{35}{\noindent
      {\@hft#1}\\
        #2#3
    }
    \advance\footcount35
  \fi
}
%    \end{macrocode}
% \DescribeMacro{\accountdata}
% Print a table with banking information. Show account number, account
% name + city, and a reference. If the |foreign| key was used,
% \textsc{iban} and \textsc{bic} codes are also reported, but can be suppressed
% with the |localbank| option.
%    \begin{macrocode}
\def\accountdata{
  \textbf{\accountdatatext:}\\
  \begin{tabular}{@{}rl@{}}
    \ifx\term\undefined\else
             \termtext: & \term\ \daystext\\
    \fi
        \accountnotext: & \accountno\\
    \ifx\accountname\undefined\else
       \accountnametext: & \accountname{}\\
    \fi
    \ifx\routingno\undefined\else
       \routingnotext: & \routingno{}\\
    \fi
        \referencetext: & \ourref\\
    \ifforeign
      \iflocalbank\else
                  iban: & \scshape \iban\\
                   bic: & \scshape \bic\\
      \fi
    \fi
    \ifx\vatno\undefined\else
      \vatnotext: & \vatno\\
    \fi
  \end{tabular}
}
%    \end{macrocode}
% The |\showkeys| command is useful for debugging. It prints a table showing the
% values of most keys.\footnote{Note for developers: the table lines below can
% be generated with a ruby script listkeys (included in the distribution):
% |listkeys defs|}
% \DescribeMacro{\showkeys}
%    \begin{macrocode}
\def\showkeys{%
  \begin{tabular}{ll}
              accept & \accept\NN
       acceptaccount & \acceptaccount\NN
       acceptaddress & \acceptaddress\NN
         acceptcents & \acceptcents\NN
          acceptdesc & \acceptdesc\NN
   acceptdescription & \acceptdescription\NN
         accepteuros & \accepteuros\NN
     acceptreference & \acceptreference\NN
         accountname & \accountname\NN
           accountno & \accountno\NN
       addresscenter & \addresscenter\NN
        addresswidth & \addresswidth\NN
            areacode & \areacode\NN
           autograph & \autograph\NN
                 bic & \bic\NN
           cellphone & \cellphone\NN
             chamber & \chamber\NN
                city & \city\NN
             closing & \closing\NN
             company & \company\NN
             country & \country\NN
         countrycode & \countrycode\NN
            currency & \currency\NN
               email & \email\NN
          enclosures & \enclosures\NN
                 fax & \fax\NN
           forcedate & \forcedate\NN
                iban & \iban\NN
         leftaddress & \leftaddress\NN
         logoaddress & \logoaddress\NN
             opening & \opening\NN
        openingcomma & \openingcomma\NN
              ourref & \ourref\NN
               phone & \phone\NN
         phoneprefix & \phoneprefix\NN
       returnaddress & \returnaddress\NN
        rightaddress & \rightaddress\NN
           routingno & \routingno\NN
           signature & \signature\NN
              street & \street\NN
             subject & \subject\NN
                term & \term\NN
               vatno & \vatno\NN
             website & \website\NN
                 who & \who\NN
          yourletter & \yourletter\NN
             yourref & \yourref\NN
                 zip & \zip\NN
  \end{tabular}
}
\AtEndOfClass{%
  \usepackage{hyperref}
   \year=0
}
\AtEndDocument{%
  \hypersetup{pdfauthor={\who},
              pdfproducer={isodoc v\fileversion}
  }
}
% \DescribeMacro{\itable}
% |\itable| inserts an invoice table; arg1 should be the rows of the table.
%    \begin{macrocode}
\def\itable#1{
  \begin{tabularx}{\hsize}{@{}X@{\barsep\quad\qquad}r@{}}
    \multicolumn{2}{@{}c@{}}{\sffamily\descriptiontext\hfill
    \amounttext (\currency)}\ML
    #1
  \end{tabularx}
}
% \DescribeMacro{\iitem}
% |\iitem| inserts an invoice item in the |\itable|.
% It inserts |arg1 & % arg2\NN|:
%    \begin{macrocode}
\def\iitem#1#2{#1&#2\NN}
% \DescribeMacro{\itotal}
%    \end{macrocode}
% |\itotal| inserts an invoice total in the |\itable|.\\
% It inserts |\cmidrule[.05em]{2-2}Total & arg1\NN|:
%    \begin{macrocode}
\def\itotal#1{\cmidrule[.05em]{2-2}\totaltext&\textbf{#1}\NN}
%    \end{macrocode}
% The counter |\lettercount| is used to construct a label on the last
% page of each letter/invoice of this document; it wil be set to
% \texttt{LastPageOf\textsl{n}}, where \textsl{n} is the letter
% number: 1, 2, 3, ... This allows for page headings saying ``Page n
% of m.'' This label is automatically added at the end of each letter.
%    \begin{macrocode}
\newcounter{lettercount}\setcounter{lettercount}{0}
%    \end{macrocode}
% \DescribeMacro{\invoice}
% |\invoice| prints an invoice. The first argument is optional, and may
% contain the same \textsl{key=value} statement as |\setupdocument|. This is
% useful if the document contains more than one invoice for different
% addressees.
%
% The second argument creates a two-column table with headings
% ``Description'' and ``Amount (\EUR)''. The two columns are separated
% with a vertical rule; its construction is somewhat complicated, as the
% booktabs/ctable packages are in use that don't provide decent vertical
% separators. The |\barsep| macro extends these separators vertically.
%    \begin{macrocode}
\newif\ifclosing\closingtrue
\newcount\footcount
\newcommand{\invoice}[2][]{%
  \closingfalse
  \def\barsep{\raisebox{-1.5ex}[0pt][0pt]{\rule{.05em}{4ex}}}%
  \letter[#1,
    opening={\bfseries\scshape\Large\invoicetext},
    openingcomma={},
    closing={},
    signature={}]{\Tbox{35}{127}{140}{#2}}
}
%    \end{macrocode}
% \DescribeMacro{\letter}
% |\letter| prints a letter...
% The code is enclosed in an extra pair of braces, in order to keep option changes local
%    \begin{macrocode}
\newcommand{\letter}[2][]{{%
  \newpage
  \setkeys{isodoc}{#1}
%    \end{macrocode}
% By now, a language should have been chosen; if not, issue a warning
% and set the language to the default: UKenglish
%    \begin{macrocode}
  \ifx\yourlettertext\undefined\ClassWarning{isodoc}{
    You did not use the language option; using the default: UKenglish
  }\isodoc@UKenglish\fi
  \ifnum\value{lettercount}=0%
    \hypersetup{pdftitle={letter to \toname\ dated \today},
                pdfsubject={\subject}}
  \fi
  \addtocounter{lettercount}{1}
  \setcounter{page}{1}
  \setcounter{footnote}{0}
  \fancyhf{}
  \if@twoside
    \fancyhead[LE,RO]{\color{headingcolor}%
       \pagetext\ \thepage\ \oftext{} \begin{NoHyper}\pageref{LastPageOf\thelettercount}\end{NoHyper}}
    \fancyhead[RE,LO]{\color{headingcolor}%
       \totext: \toname\ (\date)}
  \else
    \fancyhead[L]{\color{headingcolor}%
       \totext: \toname\ (\date)}
    \fancyhead[R]{\color{headingcolor}%
       \pagetext\ \thepage\ \oftext{} \begin{NoHyper}\pageref{LastPageOf\thelettercount}\end{NoHyper}}
  \fi
  \logo
%    \end{macrocode}
% addresscenter is the center, vertically, of the to-address block:
% xaddress should be 1 or 3 for left- and right address windows
%    \begin{macrocode}
  { \parskip=0pt\parindent=0pt
    \begin{textblock}{\addresswidth}[0,.5](\xaddress,\addresscenter)%
        \ifreturn
          {\def\\{\unskip\enspace\textbullet\enspace\ignorespaces}%
            \sffamily\bfseries\scriptsize\returnaddress
          }\\[-.8\baselineskip]
          \rule{\hsize}{.2pt}\\
        \fi
        \toname\\\toaddress
    \end{textblock}
  }
  \subjectpos=\headerpos
  \textskip=\headerpos\advance\textskip-12
  \ifx\subject\empty\advance\textskip-10\else\advance\subjectpos10\fi
  \openingpos=\subjectpos
  \ifheader
    \openingpos=\subjectpos\advance\openingpos12
    \Tbox{35}{\headerpos}{35}{\noindent
      {\@hft\yourlettertext}\\
      \yourletter
    }
    \Tbox{70}{\headerpos}{35}{\noindent
      {\@hft\yourreftext}\\
      \raggedright\yourref
    }
    \Tbox{105}{\headerpos}{35}{\noindent
      {\@hft\ourreftext}\\
      \raggedright\ourref
    }
    \Tbox{140}{\headerpos}{35}{\noindent
      {\@hft\datetext}\\
      \ifx\forcedate\empty%
        \ifnum\year=0\Undefined{date}\else\date\fi
      \else\forcedate\fi
    }
    \ifx\subject\empty\else%
      \Tbox{35}{\subjectpos}{105}{\noindent
        \begin{tabularx}{\hsize}{@{}l>{\raggedright}X@{}}
          \@hft\subjecttext&\subject
        \end{tabularx}
      }
    \fi
  \else
    \advance\textskip-12
  \fi
  \footcount=35
  \iffooter
    \footfield{\websitetext}{}{\website}
    \footfield{\phonetext}{\lead}{\phone}
    \footfield{\cellphonetext}{\lead}{\cellphone}
    \footfield{\faxtext}{\lead}{\fax}
    \footfield{\emailtext}{}{\email}
  \fi
  { \parskip=0pt\parindent=0pt
    \begin{textblock*}{3mm}(\xfold,\yfold)%
       {\color{markercolor}\rule{\hsize}{.2pt}}
    \end{textblock*}
  }
  \ifx\undefined\accepttype\else\accept\fi
  \noindent\Tbox{35}{\openingpos}{140}{\opening\openingcomma}
  \vspace{\textskip mm}
  \thispagestyle{empty}
  \noindent
  #2
  {\parindent=0pt\parskip=\baselineskip
    \ifclosing
      \ifcase\autographversion
        \par\closing\\\signature                % 0: closing on the next line
      \or\par\closing\\[\closingskip]\signature % 1: whiteskip
      \or\autographA
      \or\autographB
      \or\autographC
      \or\autographD
      \or\autographE
      \or\autographF
      \or\autographG
      \or\autographH
      \else
        \par\Undefined{autograph: \autographversion}\\
      \fi
    \fi
    \ifx\enclosures\empty\else
      \vfill
      \setbox1=\vbox{\enclosures}%
      \textbf{\ifdim\ht1>\baselineskip\enclosurestext\else\enclosuretext\fi}%
      \\\enclosures
    \fi
  }
  \label{LastPageOf\thelettercount}
}}
%    \end{macrocode}
% \subsection{Internal Macros}
% The accept is produced from |\Tbox| and |\Cbox| commands only, using the
% |textpos| package:
% \DescribeMacro{\Cbox}
% |\Cbox{x}{y}{width}{text}| places |text| in a box of |\testsl{width}| mm, centered around (|x|,|y|) in mm:
%    \begin{macrocode}
\def\Cbox#1#2#3#4{%
  { \parskip=0pt\parindent=0pt
    \begin{textblock}{#3}[.5,.5](#1,#2)%
        \begin{center}
          #4
        \end{center}
    \end{textblock}
  }
}
%    \end{macrocode}
% \DescribeMacro{\Tbox}
% |\Tbox{x}{y}{width}{text}| places |text| in a box of |\testsl{width}| mm, with the upper left corner at (|x|,|y|) in mm:
%    \begin{macrocode}
\long\def\Tbox#1#2#3#4{%
  { \parskip0pt\parindent=0pt
    \begin{textblock}{#3}(#1,#2)%
        \begin{minipage}[t]{\hsize}
          \noindent#4
        \end{minipage}
    \end{textblock}
  }
}
%    \end{macrocode}
% \DescribeMacro{\accept}
% This macro will have a parameter if other accept forms will have to be
% programmed:
%    \begin{macrocode}
\def\accept{
  \Tbox{\xacceptdescription}
       {\yacceptdescription}
       {\wacceptdescription}
       {\acceptdescription}
  \Tbox{\xacceptdesc}
       {\yacceptdesc}
       {\wacceptdesc}
       {\acceptdesc}
  \Tbox{\xacceptaddress}
       {\yacceptaddress}
       {\wacceptaddress}
       {\ifx\acceptaddress\empty\toname\\\toaddress\else\acceptaddress\fi}
  \Cbox{\xacceptreference}
       {\yacceptreference}
       {\wacceptreference}
       {\ocrb\acceptreference}
  \Tbox{\xacceptref}
       {\yacceptref}
       {\wacceptref}
       {\baselineskip=\acceptreferenceskip\ocrb\acceptreference}
  \Cbox{\xaccepteuros}
       {\yaccepteuros}
       {\waccepteuros}
       {\ocrb\accepteuros}
  \Cbox{\xacceptaccount}
       {\yacceptaccount}
       {\wacceptaccount}
       {\ocrb\acceptaccount}
  \Cbox{\xacceptcents}
       {\yacceptcents}
       {\wacceptcents}
       {\ocrb\acceptcents}
  \Cbox{\xaccepteur}
       {\yaccepteur}
       {\waccepteur}
       {\ocrb\accepteuros}
  \Cbox{\xacceptct}
       {\yacceptct}
       {\wacceptct}
       {\ocrb\acceptcents}
}
%    \end{macrocode}
% \DescribeMacro{\isodoc@catalan}
% contributed by Cristian Peraferrer:
%    \begin{macrocode}
\def\isodoc@catalan{%
  \gdef\accountdatatext {Dades banc\`aries}
  \gdef\accountnametext {a nom de}
  \gdef\accountnotext   {N\'um. de compte}
  \gdef\amounttext      {Quantitat}
  \gdef\ccname          {cc}
  \gdef\cellphonetext   {M\`obil}
  \gdef\chambertext     {Cambra de comer\c{c}}
  \gdef\datetext        {Data}
  \gdef\daystext        {dies}
  \gdef\descriptiontext {Descripci\'o}
  \gdef\emailtext       {E-mail}
  \gdef\enclosurestext  {Annexos:}
  \gdef\enclosuretext   {Annex:}
  \gdef\faxtext         {Fax}
  \gdef\invoicetext     {factura}
  \gdef\oftext          {de}
  \gdef\ourreftext      {La nostra refer\`encia}
  \gdef\pagetext        {P\`agina}
  \gdef\phonetext       {Tel\`efon}
  \gdef\referencetext   {Refer\`encia}
  \gdef\routingnotext   {Nombre de ruta}
  \gdef\subjecttext     {Assumpte}
  \gdef\termtext        {Termini del pagament}
  \gdef\totaltext       {Total}
  \gdef\totext          {A}
  \gdef\vatnotext       {N\'um. IVA}
  \gdef\vattext         {IVA}
  \gdef\websitetext     {Web}
  \gdef\yourlettertext  {La seva carta del}
  \gdef\yourreftext     {La seva refer\`encia}
  \gdef\date            {\number\day\space\ifcase\month\or
    gener\or febrer\or mar\c{c}\or abril\or maig\or juny\or
    juliol\or agost\or setembre\or octubre\or novembre\or desembre\fi
    \space \number\year
  }
}
%    \end{macrocode}
% \DescribeMacro{\isodoc@dutch}
%    \begin{macrocode}
\def\isodoc@dutch{%
  \gdef\accountdatatext {Betalingsgegevens}
  \gdef\accountnametext {ten name van}
  \gdef\accountnotext   {rekening nr}
  \gdef\amounttext      {Bedrag}
  \gdef\ccname          {Cc:}
  \gdef\cellphonetext   {mobiel}
  \gdef\chambertext     {kvk}
  \gdef\datetext        {Datum}
  \gdef\daystext        {dagen}
  \gdef\descriptiontext {Omschrijving}
  \gdef\emailtext       {e-mail}
  \gdef\enclosurestext  {Bijlagen:}
  \gdef\enclosuretext   {Bijlage:}
  \gdef\faxtext         {telefax}
  \gdef\invoicetext     {rekening}
  \gdef\oftext          {van}
  \gdef\ourreftext      {Ons kenmerk}
  \gdef\pagetext        {Bladnummer}
  \gdef\phonetext       {telefoon}
  \gdef\referencetext   {kenmerk}
  \gdef\routingnotext   {banknummer}
  \gdef\subjecttext     {Onderwerp:}
  \gdef\termtext        {betalingstermijn}
  \gdef\totaltext       {Totaal}
  \gdef\totext          {Aan}
  \gdef\vatnotext       {btw nr}
  \gdef\vattext         {Btw}
  \gdef\websitetext     {webstek}
  \gdef\yourlettertext  {Uw brief van}
  \gdef\yourreftext     {Uw kenmerk}
  \gdef\date            {\number\day\space\ifcase\month\or
    januari\or februari\or maart\or april\or mei\or juni\or juli\or
    augustus\or september\or oktober\or november\or december\fi
    \space \number\year}
}
%    \end{macrocode}
% \DescribeMacro{\isodoc@french}
%    \begin{macrocode}
\def\isodoc@french{%
  \gdef\accountdatatext {Donn\'ees banquaires}
  \gdef\accountnametext {au nom de}
  \gdef\accountnotext   {no. compte}
  \gdef\amounttext      {Montant}
  \gdef\ccname          {Copie \`a}
  \gdef\cellphonetext   {portable}
  \gdef\chambertext     {c.c.i.}
  \gdef\datetext        {Date:}
  \gdef\daystext        {jours}
  \gdef\descriptiontext {Description}
  \gdef\emailtext       {email}
  \gdef\enclosurestext  {Pi\`eces jointes:}
  \gdef\enclosuretext   {Pi\`ece jointe:}
  \gdef\faxtext         {t\'el\'efax}
  \gdef\invoicetext     {facture}
  \gdef\oftext          {de}
  \gdef\ourreftext      {Nos r\'ef\'erences:}
  \gdef\pagetext        {Page}
  \gdef\phonetext       {t\'el\'ephone}
  \gdef\referencetext   {r\'ef\'erence}
  \gdef\routingnotext   {num\'ero d'acheminement}
  \gdef\subjecttext     {Objet:}
  \gdef\termtext        {terme}
  \gdef\totaltext       {Total}
  \gdef\totext          {\`A l'attention de}
  \gdef\vatnotext       {no. T.V.A.}
  \gdef\vattext         {T.V.A.}
  \gdef\websitetext     {site Web}
  \gdef\yourlettertext  {Votre lettre du}
  \gdef\yourreftext     {Vos r\'ef\'erences:}
  \gdef\date            {\number\day\ifnum\day=1$^{er}$\fi\space\ifcase\month\or
    janvier\or f\'evrier\or mars\or avril\or mai\or juin\or
    juillet\or ao\^ut\or septembre\or octobre\or
    novembre\or d\'ecembre\fi \space \number\year}
}
%    \end{macrocode}
% \DescribeMacro{\isodoc@german}
%    \begin{macrocode}
\def\isodoc@german{%
  \gdef\accountdatatext {Bezahlungsdaten}
  \gdef\accountnametext {Name}
  \gdef\accountnotext   {Konto Nr}
  \gdef\amounttext      {Betrag}
  \gdef\ccname          {Kopien an}
  \gdef\cellphonetext   {Handy}
  \gdef\chambertext     {Register Nr}
  \gdef\datetext        {Datum}
  \gdef\daystext        {Tage}
  \gdef\descriptiontext {Umschreibung}
  \gdef\emailtext       {E-mail}
  \gdef\enclosurestext  {Anlagen:}
  \gdef\enclosuretext   {Anlage:}
  \gdef\faxtext         {Telefax}
  \gdef\invoicetext     {rechnung}
  \gdef\oftext          {aus}
  \gdef\ourreftext      {Unser Zeichen}
  \gdef\pagetext        {Seite}
  \gdef\phonetext       {Telefon}
  \gdef\referencetext   {Beleg Nr}
  \gdef\routingnotext   {BLZ}
  \gdef\subjecttext     {Betrifft:}
  \gdef\termtext        {Zahlungstermin}
  \gdef\totaltext       {Insgesamt}
  \gdef\totext          {An}
  \gdef\vatnotext       {Ustid Nr}
  \gdef\vattext         {MwSt}
  \gdef\websitetext     {Webseite}
  \gdef\yourlettertext  {Ihr Brief vom}
  \gdef\yourreftext     {Ihr Zeichen}
  \gdef\date            {\number\day.\space\ifcase\month\or
    Januar\or Februar\or M\"arz\or April\or Mai\or Juni\or
    Juli\or August\or September\or Oktober\or November\or Dezember\fi
    \space\number\year}
}
%    \end{macrocode}
% \DescribeMacro{\isodoc@italian}
% contributed by Walter Giocoso:
%    \begin{macrocode}
\def\isodoc@italian{%
  \gdef\accountdatatext {Coordinate bancarie}
  \gdef\accountnametext {intestato a}
  \gdef\accountnotext   {n$^o$~del conto}
  \gdef\amounttext      {Prezzo}
  \gdef\ccname          {Per conoscenza a:}
  \gdef\cellphonetext   {cellulare:}
  \gdef\chambertext     {}
  \gdef\datetext        {Data:}
  \gdef\daystext        {giorni}
  \gdef\descriptiontext {Descrizione}
  \gdef\emailtext       {e-mail:}
  \gdef\enclosurestext  {Allegati:}
  \gdef\enclosuretext   {Allegato:}
  \gdef\faxtext         {fax:}
  \gdef\invoicetext     {fattura}
  \gdef\oftext          {di}
  \gdef\ourreftext      {Nostro riferimento:}
  \gdef\pagetext        {Pagina}
  \gdef\phonetext       {telefono:}
  \gdef\referencetext   {riferimento}
  \gdef\routingnotext   {numero di routing}
  \gdef\subjecttext     {Oggetto:}
  \gdef\termtext        {scadenza}
  \gdef\totaltext       {Totale}
  \gdef\totext          {All'attenzione di:}
  \gdef\vatnotext       {Partita I.V.A.}
  \gdef\vattext         {I.V.A.}
  \gdef\websitetext     {sito Web:}
  \gdef\yourlettertext  {Vostra lettera del:}
  \gdef\yourreftext     {Vostro riferimento:}
  \gdef\date            {\number\day\ifnum\day=1\fi
    ~\ifcase\month\or
    Gennaio\or Febbraio\or Marzo\or Aprile\or Maggio\or Giugno\or
    Luglio\or Agosto\or Settembre\or Ottobre\or Novembre\or Dicembre\fi
    \space \number\year}
}
%    \end{macrocode}
% \DescribeMacro{\isodoc@norsk}
% contributed by Sveinung Heggen:
%    \begin{macrocode}
\def\isodoc@norsk       {%
  \gdef\accountdatatext {betales til}
  \gdef\accountnametext {til}
  \gdef\accountnotext   {faktura nr}
  \gdef\amounttext      {Bel\o{}p}
  \gdef\ccname          {kopi til:}
  \gdef\cellphonetext   {mobil}
  \gdef\chambertext     {}
  \gdef\datetext        {Dato}
  \gdef\daystext        {dager}
  \gdef\descriptiontext {Beskrivelse}
  \gdef\emailtext       {e-post}
  \gdef\enclosurestext  {Vedlegg:}
  \gdef\enclosuretext   {Vedlegg:}
  \gdef\faxtext         {telefaks}
  \gdef\invoicetext     {faktura}
  \gdef\oftext          {av}
  \gdef\ourreftext      {V\aa{}r ref:}
  \gdef\pagetext        {Side}
  \gdef\phonetext       {telefon}
  \gdef\referencetext   {referanse}
  \gdef\routingnotext   {routing-nummer}
  \gdef\subjecttext     {Vedr:}
  \gdef\termtext        {betalingsfrist}
  \gdef\totaltext       {Total}
  \gdef\totext          {Til}
  \gdef\vatnotext       {Org. nr.}
  \gdef\vattext         {Mva}
  \gdef\websitetext     {hjemmeside}
  \gdef\yourlettertext  {Deres brev av}
  \gdef\yourreftext     {Deres ref:}
  \gdef\date            {\number\day.\space\ifcase\month\or
    januar\or februar\or mars\or april\or mai\or juni\or
    juli\or august\or september\or oktober\or november\or desember\fi
   \space \number\year}
}
%    \end{macrocode}
% \DescribeMacro{\isodoc@serbian}
% contributed by Zoran T. Filipovic:
%    \begin{macrocode}
\def\isodoc@serbian	{%
  \gdef\totaltext	{Ukupno}
  \gdef\vattext		{PDV}
  \gdef\accountdatatext	{Podaci o bankarskom sektoru}
  \gdef\accountnametext	{na ime}
  \gdef\accountnotext	{Ra\v cun br.}
  \gdef\amounttext	{Iznos}
  \gdef\ccname		{Kopije}
  \gdef\cellphonetext	{Mobilni}
  \gdef\chambertext	{Spisak br.}
  \gdef\datetext	{Datum}
  \gdef\daystext	{dana}
  \gdef\descriptiontext	{Opis}
  \gdef\emailtext	{Email}
  \gdef\enclosurestext	{Prilozi:}
  \gdef\enclosuretext	{Prilog:}
  \gdef\faxtext		{Telefax}
  \gdef\invoicetext	{faktura}
  \gdef\oftext		{od}
  \gdef\ourreftext	{Na\v s broj}
  \gdef\pagetext	{Strana}
  \gdef\phonetext	{Telefon}
  \gdef\referencetext	{Dokumet br.}
  \gdef\routingnotext   {BLZ}
  \gdef\subjecttext	{Predmet:}
  \gdef\termtext	{rok pla\' canja}
  \gdef\totext		{U}
  \gdef\vatnotext	{porez br.}
  \gdef\websitetext	{Website}
  \gdef\yourlettertext	{Va\v se pismo od}
  \gdef\yourreftext	{Va\v s broj}
  \gdef\date{\number\day.~\ifcase\month\or
    Januar\or Februar\or Mart\or April\or Maj\or Jun\or
    Jul\or Avgust\or Septembar\or Oktobar\or Novembar\or Decembar\fi
    \space\number\year}
}
%    \end{macrocode}
% \DescribeMacro{\isodoc@spanish}
% contributed by Cristian Peraferrer:
%    \begin{macrocode}
\def\isodoc@spanish{%
  \gdef\accountdatatext {Datos bancarios}
  \gdef\accountnametext {a nombre de}
  \gdef\accountnotext   {N\'um. de cuenta}
  \gdef\amounttext      {Cantidad}
  \gdef\ccname          {cc}
  \gdef\cellphonetext   {M\'ovil}
  \gdef\chambertext     {C\'amara de comercio}
  \gdef\datetext        {Fecha}
  \gdef\daystext        {d\'{\i}as}
  \gdef\descriptiontext {Descripci\'on}
  \gdef\emailtext       {E-mail}
  \gdef\enclosurestext  {Anexos:}
  \gdef\enclosuretext   {Anexo:}
  \gdef\faxtext         {Fax}
  \gdef\invoicetext     {factura}
  \gdef\oftext          {de}
  \gdef\ourreftext      {Nuestra referencia}
  \gdef\pagetext        {P\'agina}
  \gdef\phonetext       {Tel\'efono}
  \gdef\referencetext   {Referencia}
  \gdef\routingnotext   {n\'umero de ruta}
  \gdef\subjecttext     {Asunto}
  \gdef\termtext        {Plazo de pago}
  \gdef\totaltext       {Total}
  \gdef\totext          {A}
  \gdef\vatnotext       {N\'um. IVA}
  \gdef\vattext         {IVA}
  \gdef\websitetext     {Web}
  \gdef\yourlettertext  {Su carta de}
  \gdef\yourreftext     {Su referencia}
  \gdef\date            {\number\day\space\ifcase\month\or
    enero\or febrero\or marzo\or abril\or mayo\or junio\or
    julio\or agosto\or septiembre\or octubre\or noviembre\or diciembre\fi
    \space \number\year
  }
}
% \DescribeMacro{\isodoc@UKenglish}
%    \begin{macrocode}
\def\isodoc@UKenglish{%
  \gdef\accountdatatext {Banking data}
  \gdef\accountnametext {in the name of}
  \gdef\accountnotext   {Account no.}
  \gdef\amounttext      {Amount}
  \gdef\ccname          {cc}
  \gdef\cellphonetext   {cellphone}
  \gdef\chambertext     {ch.comm.}
  \gdef\datetext        {Date}
  \gdef\daystext        {days}
  \gdef\descriptiontext {Description}
  \gdef\emailtext       {email}	
  \gdef\enclosurestext  {Enclosures:}
  \gdef\enclosuretext   {Enclosure:}
  \gdef\faxtext         {telefax}
  \gdef\invoicetext     {invoice}
  \gdef\oftext          {of}
  \gdef\ourreftext      {Our reference}
  \gdef\pagetext        {Page}
  \gdef\phonetext       {telephone}
  \gdef\referencetext   {Reference}
  \gdef\routingnotext   {Routing no}
  \gdef\subjecttext     {Subject:}
  \gdef\termtext        {term of payment}
  \gdef\totaltext       {Total}
  \gdef\totext          {To}
  \gdef\vatnotext       {vat no.}
  \gdef\vattext         {Vat}
  \gdef\websitetext     {website}
  \gdef\yourlettertext  {Your letter of}
  \gdef\yourreftext     {Your reference}
  \gdef\date{\ifcase\day\or
     1st\or  2nd\or  3rd\or  4th\or  5th\or
     6th\or  7th\or  8th\or  9th\or 10th\or
    11th\or 12th\or 13th\or 14th\or 15th\or
    16th\or 17th\or 18th\or 19th\or 20th\or
    21st\or 22nd\or 23rd\or 24th\or 25th\or
    26th\or 27th\or 28th\or 29th\or 30th\or
    31st\fi\space\ifcase\month\or
    January\or February\or March\or April\or May\or June\or
    July\or August\or September\or October\or November\or December\fi
    \space \number\year}
}
%    \end{macrocode}
% \DescribeMacro{\isodoc@USenglish}
%    \begin{macrocode}
\def\isodoc@USenglish{%
  \gdef\accountdatatext {Bank details}
  \gdef\accountnametext {in the name of}
  \gdef\accountnotext   {Account no.}
  \gdef\amounttext      {Amount}
  \gdef\ccname          {cc}
  \gdef\cellphonetext   {cellphone}
  \gdef\chambertext     {ch.comm.}
  \gdef\datetext        {Date}
  \gdef\daystext        {days}
  \gdef\descriptiontext {Description}
  \gdef\emailtext       {email}
  \gdef\enclosurestext  {Enclosures:}
  \gdef\enclosuretext   {Enclosure:}
  \gdef\faxtext         {telefax}
  \gdef\invoicetext     {invoice}
  \gdef\oftext          {of}
  \gdef\ourreftext      {Our reference}
  \gdef\pagetext        {Page}
  \gdef\phonetext       {telephone}
  \gdef\referencetext   {Reference}
  \gdef\routingnotext   {Routing no}
  \gdef\subjecttext     {Subject:}
  \gdef\termtext        {term of payment}
  \gdef\totaltext       {Total}
  \gdef\totext          {To}
  \gdef\vatnotext       {vat no.}
  \gdef\vattext         {Vat}
  \gdef\websitetext     {website}
  \gdef\yourlettertext  {Your letter of}
  \gdef\yourreftext     {Your reference}
  \gdef\date            {\ifcase\month\or
    January\or February\or March\or April\or May\or June\or
    July\or August\or September\or October\or November\or December\fi
    \space\number\day, \number\year}
}
%    \end{macrocode}
% \Finale
\endinput
$Id: isodoc.dtx,v 1.31 2010-08-24 19:50:48 wybo Exp $