rendered paste body\documentclass[11pt,twoside,a4paper]{article}
\usepackage{a4wide,amsmath,amssymb}
\usepackage{invoice}
\begin{document}
\begin{invoice}{EUR}
\ProjectTitle{Monat X}%
% Foo Bar Baz
\Fee{Datum} {Stunde} {10}
\end{invoice}
\end{document}
===
This is pdfTeXk, Version 3.141592-1.40.3 (Web2C 7.5.6)
%&-line parsing enabled.
entering extended mode
(./invoice_template.tex
LaTeX2e <2005/12/01>
Babel <v3.8h> and hyphenation patterns for english, usenglishmax, dumylang, noh
yphenation, german, ngerman, latin, loaded.
(/usr/share/texmf-texlive/tex/latex/base/article.cls
Document Class: article 2005/09/16 v1.4f Standard LaTeX document class
(/usr/share/texmf-texlive/tex/latex/base/size11.clo))
(/usr/share/texmf-texlive/tex/latex/ltxmisc/a4wide.sty
(/usr/share/texmf-texlive/tex/latex/ntgclass/a4.sty))
(/usr/share/texmf-texlive/tex/latex/amsmath/amsmath.sty
For additional information on amsmath, use the `?' option.
(/usr/share/texmf-texlive/tex/latex/amsmath/amstext.sty
(/usr/share/texmf-texlive/tex/latex/amsmath/amsgen.sty))
(/usr/share/texmf-texlive/tex/latex/amsmath/amsbsy.sty)
(/usr/share/texmf-texlive/tex/latex/amsmath/amsopn.sty))
(/usr/share/texmf-texlive/tex/latex/amsfonts/amssymb.sty
(/usr/share/texmf-texlive/tex/latex/amsfonts/amsfonts.sty))
(/usr/share/texmf-texlive/tex/latex/invoice/invoice.sty
(/usr/share/texmf-texlive/tex/latex/base/ifthen.sty)
(/usr/share/texmf-texlive/tex/latex/tools/longtable.sty)
(/usr/share/texmf-texlive/tex/latex/tools/calc.sty)
(/usr/share/texmf-texlive/tex/generic/realcalc/realcalc.tex
`Real arithmetic', Version 1.0, Jan. 1993(C) Frank Buchholz)
(/usr/share/texmf-texlive/tex/latex/invoice/invoice.def))
(./invoice_template.aux)
VAT is not zero!
! Missing number, treated as zero.
<to be read again>
S
l.12 \Fee{Datum} {Stunde} {10}
? X