Hi, if \underbar is used inside of an overprinted test, the underbar line does not share the OVP attribute. Mkii works as expected, meaning the stroke is part of the text and should be handled equally. A minimal example is attached. MTXrun | current version: 2009.11.26 16:28 This is LuaTeX, Version beta-0.46.0-2009112616 Best wishes, Peter \setupcolors[state=start] \setuppagenumber[state=stop] \starttext \setupunderbar[bottomoffset=2pt,rulethickness=2pt] \startoverprint \switchtobodyfont[60pt]\underbar{O}K \stopoverprint \stoptext