Hello, In French typography, roman numerals are usually typeset being connected with a top bar and a lower bar, at least when it comes to century numbers (should be also small caps, something I discovered today). Since I am not sure my vocabulary suits to this reality, you can see a sample looking at photos displayed in this online article https://fr.cultura10.com/r%C3%A8gles-d%27%C3%A9criture-des-nombres-romains/ I have been simulating this with kerning for several years, but I recently switched from Latin Modern Sans to Luciole (both 24pt) for my presentations and I have to redesign this issue. So it is a good opportunity to find some a better alternative than stuff like \def\III{{\rm I\kern -1.3pt I\kern -1.3pt I}}, working at the font level or with a ConTeXt built-in macro. Several questions: 1) Is this already implemented in ConTeXt (I don't have time to reinvent the wheel once more)? The sample I looked at in the \Romannumeral wiki page doesn't implement this, but they may be alternative I am not aware of. 2) If it isn't, I think the best way would be to add a font extension, using hits given by Hans in the 11th meeting proceedings. However, what would be the best idea: playing with kerning, or with ligatures? Thanks for your advices, Damien Thiriet