Ah, yes. I think this is all hardcoded in the troff files (i.e., this isstatic text).Yes, I know. But we could use something similar to the conversion of "lib/lyx2lyx/lyx2lyx_version.py.in" to ".../lyx2lyx_version.py".
lyx.1 is qlready generated from lyx.1in. It would be trivial to set up the same for tex2lyx.1.
JMarc