[NTG-context] Defining new font switches

Dear crew, I am having trouble defining my own font switches. I get an undefined control sequence for, e.g, \mv, with the following: ================================ % output=pdf interface=en \definestyle [myvariant] [\mv] [] \starttypescript [serif] [modern] [size] \definebodyfont [9pt,10pt,11pt,12pt,14.4pt,17.3pt,20.7pt] [rm] [mv=Serif sa 1] \stoptypescript \usetypescript [serif] [modern] [size] \starttext This is a test. \mv This is a test. \stoptext ================================ What am I missing? Thnx in advance! Best Idris ============================ Professor Idris Samawi Hamid Department of Philosophy Colorado State University Fort Collins, CO 80523