My Lyx userguide tells me, that I can invoce the calligraphic font in math-mode by typing M-z j (not very intuitive, by the way). However, when trying out this, nothing happens. It turns out that this binding does not exist. I wondered whether it might have to do with german localisation, but even the original menu.bind does not show the binding. Furthermore, the reference guide does not contain a function that seems as a candidate for that binding. Does anybody know a function that invoces \mathcal{}? (BTW, writing \mathcal in math-mode works, so it is not urgent, maybe we just need to adapt the documentation) Guenter -- [EMAIL PROTECTED]