2011/1/3 Vianney le Clément :

\def\Title{\dodoubleempty\doTitle} \def\doTitle[#1][#2]{  \ifsecondargument     \testpage[#2]  \else     \testpage[10]  \fi  \startalignment[center]  {     \blank[2*big]     \switchtobodyfont[1.5em]     \bf\em#1  }  \blank  \stopalignment }

Vianney

On Mon, Jan 3, 2011 at 10:46, Cecil Westerhof wrote:

...

I have the folowing function for a title: \def\Title[#1]{  \testpage[10]  \startalignment[center]  {      \blank[2*big]      \switchtobodyfont[1.5em]      \bf\em#1  }  \blank  \stopalignment }

What I would like is that there is an optional second parameter. When it is there, it is used in the testpage command. Otherwise the default value is used. How would I do this?

-- Cecil Westerhof ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net archive  : http://foundry.supelec.fr/projects/contextrev/ wiki     : http://contextgarden.net ___________________________________________________________________________________

You can also use a key/value approach, which is more flexible \unprotect \def\Title[#1]{ \getparameters[CecWes@@][param1={default},param2={default2}, param3={default3},#1] \testpage[10] \startalignment[center] { \blank[2*big] \switchtobodyfont[1.5em] \bf\em\getvalue{CecWes@@param1} } \blank \stopalignment } \protect \starttext .... %% param1= FOO, param2=BOO, param3=default3 %% the order is not important \Title[param2={BOO},param1={BOO}] ..... \stoptext -- luigi