It is possible, though, for Patchou to add a prefix such as NOTRANS to a not-intended-to-be-translated entry, like
code:
NOTRANS_Def1Cmd=Slap
It adds 8x3=24 bytes (or 48 bytes in Unicode) to every current translation file, and I think it's kinda bearable. Easy for Choli to code the dectector of this prefix too
If the prefix is found in an entry's key name, just don't show it in the TreeView.