Thanks for your answer.
I need this info because as i said, i'm trying to program XPUIPC to work with MobiFlight, and as you know XPUIPC is a clone of FSUIPC, which uses the same principles with it. However, there's a load of info about these abbrevations in the XPUIPC.ini file, which is supposed to help people to create their own config files, but it's barely comprehensible for me, as i've got no clue about programming. That's why i've asked this. Maybe there are some solid rules like "switches are always int" or "annunciators are UINT32" etc. I only know about the Boolean, which is a simple on/off trigger :)
And for the annunciators, i've used search but couldn't find anything useful, that's why i've created this topic, excuse me if i'm mistaken.
Yet again, i understand that it's kind of a complicated thing to make work these ,say the default 737's overhead annunciators lime PMDG, right ?