Uwe Stöhr schrieb:
>> 2302 HOUSE: ⌂> \newcommand*\DEL{{\fontencoding{U}\fontfamily{ascii}\selectfont\char127}}This and all other commands you sent lead to completely different characters here on my MiKTeX-system.
Now I get it: I have to use \usepackage{ascii} and then {\ascii\DEL} I should have read the documentation of the ascii-package more careful. I put it in: http://www.lyx.org/trac/changeset/18585 thanks for your help and best regards Uwe