[hervem]

Not even sure AI could help about it, those software might run over system where the documentation never got out from physical paper support, maybe even hand notes.

Talking Win 3.1, it means using Quick C / MFC 1.0 and co. that I image no today AI would learn as deprecated.

[jasomill]

Visual C++ 1.52c (with MFC 2.50) is the last version to support 16-bit Windows and includes full electronic documentation (in Windows HLP and WRI format, admittedly, but it's there).