\def\cmdAval{CMDA}
\def\cmdBval{\invalid}
\def\cmdCval{\invalid}
\documentclass{tpa}
\def\cmdAval{\invalid}
\def\Title{Titlepage customisation in Tralics}


\title{\Title}
\author{José Grimm}
\author{Knuth}
\myself
\autk

\Paris \URsop
\waddress

\sParis \sURsop \sURlor

\begin{Eabstract}
This is an abstract with \par some paragraphs in it\par ok ?
\end{Eabstract}

\begin{eabstract}
This is an abstract without paragraphs in it
\end{eabstract}
\pabstract{Another abstract \par with \par in it}
\abstractalias{Another abstract without par}

\def\cmdBval{CMDB}
\begin{document}
\def\cmdBval{\invalidagain}

\def\cmdCval{CMDC}
\InsertTitlepage

\end{document}

