Hi all, I've been experimenting with my Greek stuff in luatex, and I think I'm making nice progress. Things pretty much work with Unicode input, and as soon as the kerning problem is solved, I'm very optimistic. Two questions came up for me; I assume the answers are straightforward, but couldn't find anything: 1. How can I remap single characters? Let's say that we have a Unicode character in the input stream that maps to 0x03c3, but I want it remapped to 0x3f2, how can this be achieved? 2. Similarly: if I want to support the legacy input method babel, I need to remap the input stream to the Greek characters (question 1) and also need to feed the font some ligature rules, such as: the combination >a needs to be combined into the character 0x1f00. What would be the syntax and the way to do this? All best Thomas