Volker, as you're the author please add a manpage for the vfs_expand_msdfs module. Thanks!
I would rather vote to remove that module. I think nobody has used it in the last decade.
I'll submit a patch that removes the module to the lists.
Created attachment 13101 [details] Patch for master
This bug was referenced in samba master: 4d44db0208ad604b270d8659e2c5d4a079941423
4d44db0208a