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This thread reminds me of when, while driving around with the kids, we used to play I-Spy. After a short while basic clues got too easy so we graduated to things like "PIFATSOTR". This, obviously, is for "pylon in field at the side of the road".
That's not unique to acronyms though. It's entirely possible to be arrogant while pretending to care about the other party in a fully-fledged sentence. Just like with any other form of speech, acronyms can be used for good or bad.
Heck, one of the last times I spoke with my mather, she followed the usual "how to make sure the other side feels cared abut"-advice to the letter. Meaning she followed the form and form only.
I'm trying to make the link between your subject line and the actual message content.
If you're looking for API references, the online docs are probably still your best bet - at this point even the very last MSDN disc that got pressed is now horribly out of date. I've sent the few thousands I still had for recycling a few years ago.