All, and esp. Hans, Taco, I'm still experimenting with the new moduleparameter mechanism. One thing I can't get to work is using it in a \definefont. Here's my minimal example: \startmodule[mymod] \unprotect \setupmodule[font=Times] \definefontsynonym[Times][ec-TimesNewRoman] % valid name \definefont[myfont][\currentmoduleparameter{font}] \message{The myfont is \currentmoduleparameter{font}} \protect \stopmodule \endinput \usemodule[mymod][font=Times] \starttext Hello world! \myfont and hello again \purefontname\font \stoptext In the log file, I get: (./t-mymod.tex The myfont is Times) So the definefont should work (if I define \definefont[myfont] [Times], I get the expected output), but the file fails to compile, with this error: ! Missing \endcsname inserted. <to be read again> \@@md:unknown:font \truefontname #1->\ifcsname \??ff \fontclass #1 \endcsname \@EA \truefontname... \donoparsefontspec ...\truefontname \somefontname }\ifx \fontfile \s! unknown... \dododefinefont ...e \fontbody \parsefontspec {#2} \rawfontidentifier \let \l... \redodefinefont #1#2#3->\dododefinefont {#1}{#2} \doifsetupselse {#3} {\setup... l.7 \myfont and hello again ? Process aborted What am I missing? Best Thomas