I just found a feature that probably few people use, relative to the number of total Word users. Even though I'm running English Windows XP, my default IME is Korean. By pressing right-alt, I can switch between Roman and Hangeul mode.

However, every now and then, I forget to switch, and end up typing (and usually sending, since it's IRC or IM), English, but in Hangeul mode. So, if I were to write, “Hi, how are you?”, it'd come out as “ㅗㅑ, ㅙㅈ ㅁㄱㄷ ㅛㅐㅕ?” The same is in reverse. If I was to say “언녕!” it'd write “dkssud!”.

What's cool is the Word is smart enough to recognize this common mistake, since “dkssud” or “ㅗㅑ, ㅙㅈ ㅁㄱㄷ ㅛㅐㅕ” are extremely rare sequences in those alphabets, but common in the other one. So Word automatically corrects the text, and flips your mode. End result? You don't need to worry about switching manually, even if your document uses both English and Korean. Very cool.

I've had it mess up on me one time (in fact, since it's such a transparent feature, I only *thought* it existed before -- I'd type something and think that it flashed and flipped over, but never really tested it) -- typing “cmd”, as in a “.cmd file”, triggers it and it outputs “층” (cheung) instead.