
\documentclass{article}
\usepackage[usetemplates]{web}
\margins{2cm}{2cm}{2cm}{2cm}       %% Kein Seitenrand
\screensize{297mm}{210mm}          %% Dimensionen: H\"{o}he, Breite des Dokuments

\textBgColor{lightgray}
\usepackage{pst-flags}

\parindent0pt
\parskip7pt

\begin{document}

The default is \verb!nation=Germany!.

Possible values for \texttt{nation} are:

\texttt{Austria, Belgium, Bulgaria, CzechRepublic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Monaco, Netherlands, Norway, Poland, Romania, Russia, Sweden, Switzerland, Turkey, Ukraine, UnitedKingdom, UnitedStates}

\psset{unit=2.5mm}

\pstFlag

\pstFlag[nation=Austria]\quad\pstFlag[nation=Belgium]\quad\pstFlag[nation=Bulgaria]

\pstFlag[nation=CzechRepublic]\quad\pstFlag[nation=Denmark]\quad\pstFlag[nation=Estonia]

\pstFlag[nation=Finland]\quad\pstFlag[nation=France]\quad\pstFlag[nation=UnitedKingdom]

\pstFlag[nation=Greece]\quad\pstFlag[nation=Hungary]\quad\pstFlag[nation=Iceland]

\pstFlag[nation=Ireland]\quad\pstFlag[nation=Italy]\quad\pstFlag[nation=Latvia]

\pstFlag[nation=Lithuania]\quad\pstFlag[nation=Luxembourg]\quad\pstFlag[nation=Monaco]

\pstFlag[nation=Netherlands]\quad\pstFlag[nation=Norway]\quad\pstFlag[nation=Poland]

\pstFlag[nation=Romania]\quad\pstFlag[nation=Russia]\quad\pstFlag[nation=Sweden]

\pstFlag[nation=Switzerland]\quad\pstFlag[nation=Turkey]\quad\pstFlag[nation=Ukraine]

\pstFlag[nation=UnitedStates]

\end{document} 