Hi, I uploaded a new beta: The character definitions have been updated (esp math, thanks to Aditya). After some testing by Wolfgang the decision was made to permit _ in macronames in modules. So, the following works: \unprotect \def\test_test_test#1#2{#1+#2=whatever} \test_test_test{1}{2} \protect In principle we can also support ^. The mkiv code base no longer uses _ and ^ in math in modules and those who write modules should avoid them as well. So, when writing macros in unprotected mode, one schould use: $x\normalsuperscript2\normalsubscript n$ Taco and I think that we can safely switch to \nonknuthmode in mkiv so this might happen soon (which means that _ and ^ become normal characters in text mode). Actually, being permanently in \nonknuthmode would permit _ and ^ in modules again. We could even make _ and ^ always letters outside math in which case \text_test etc would become possible everywhere but that needs some more consideration. In that case \def\make_subscript#1#2{\mathematics{#1_{#2}}} \make_subscript{x}{2} becomes valid everywhere. We can discuss this in detail at the dev list. Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------