Acronyms

Acronyms are psuedo-words made up from the initials of a phrase.  The one you're most likely to see, in the context of FAQs (frequently asked, or answered, questions) is to RTFM.

I'll put a few here, but I'm not going to be an acronym dictionary.  If you can't figure one out, then use your comman sense, and search for it using a search engine, or check your e-mail clients documentation (that often contains a few), else search the internet for “TLAs” (three letter acronyms, whether or not they're three letters long).

IIRC

If I recall correctly.

IMO

In my opinion.

IMHO

In my humble/honest opinion

The “H” usually stands for honest or humble (but it often isn't “humble”).

IYSWIM

If you see what I mean.

LOL

Laughs out loud.

Which is different from how LOL used to mean “lots of love,” in traditional letters (on paper).

ROFL

Rolls on the floor laughing

It often has more letters on the end too, you can figure out what they may mean by yourself.

RTFM

Read the ??????? manual.

You can pick your own choice for the “F” word.

TLAs

Three letter acronyms.

Which also includes ones with more than three letters.

TTFN

Ta ta, for now.

A British way of saying, “see you later.”

Windows

“Microsoft-speak” for “crap.”

WIMP

Windows, Icons, and Mouse Pointer

A generic description for something that uses a graphical user interface (GUI), rather than plain text.

WYSIWYG

What you see is what you get

Usually used in the context of some file editor, where the editor (often approximately) shows you what the end result may look like, as you edit it.