is a 7-bit standard
s 128 through 255 are vendor-specific
. The IBM PC
s use a buttload
of these characters for line drawing
, whereas the Macintosh
uses most of them for accent
Some of the characters the Mac has and the vanilla DOS PC doesn't: Portuguese vowels; the ae, oe, fl, and fi ligatures; smart quotes and European quotes; the dagger and double dagger marks; and the em dash.
If you haven't had enough weird characters in vendor-extended ASCII, check out Unicode.