That's good to know! But it doesn't change the fact that doing it manually takes quite some work and requires figuring out stuff by trial and error because it's undocumented.
(Ofc if documentation has been published since my last search on the subject I'd be very happy to be proven wrong).
The core of the problem seems to boil down to with the way Joplin is put together, and more or less the same reason why it's impossible to do any editing on Android that isn't super basic (albeit, the last time I did attempt that was quite some time ago, so if things have improved I'll stand corrected).
For whatever that may be worth, as it is my understanding, that any attempt at remediation would require a significant, lengthy effort. So, thanks for the pointer.
PS: and also, apologies for the brief diversion from the specific topic of discussion.