https://bugs.winehq.org/show_bug.cgi?id=8780
--- Comment #35 from Nikolay Sivov bunglehead@gmail.com --- (In reply to Fabian Maurer from comment #33)
Isn't that acceptable until it we find a program that requires it being that old format?
There are patches that provide some writing support for this format, at https://github.com/wine-staging/wine-staging/tree/master/patches/widl-SLTG_T....