Actually, back in the day (the 1990s) Apple could care less about anti-aliasing type... Adobe took care of that for us with Adobe Type Manager (they also had software that grouped our fonts).
Postscript Type 1 fonts (on mac or PC) have both bitmap and vector files. ATM allowed us to view layout using renderings of the vector data instead of the bitmaps.
ATM existed for PCs as well. Both systems could do WYSIWYG. And, because of ATM, the antialiasing was generally the same across platforms.
....
This is a misrepresentation of
ATM and what it did.
ATM was a screen renderer for PostScript Type 1 fonts. It gave WYSIWYG view of type with only one or two type sizes of bitmaps in a single typestyle. The
ATM renderer generated all other type sizes and styles from the printer [vector] fonts. However, ... text displayed on screen by
ATM was not nearly as good as bitmapped versions of fonts in the proper typesizes and typestyles. Bitmaps' quality advantage onscreen was outweighed by the fact that they required valuable space on the limited-capacity hard drives of the day.
Your assertion about
ATM ignores the real reason that it was developed in the first place. Apple had requested that Adobe make Type 1 hinting available for low-resolution devices. [In the parlance of the day, low-resolution devices were laser printers and Macintosh monitors.] Adobe refused, scolding Apple that Adobe's target market was professional typography [on professional phototypesetters]. This was the beginning of the Type Wars. In response to Adobe's hubris, Apple announced that it would develop TrueType. TrueType would work on both laserprinter and computer screen without bitmapped fonts. Adobe returned fire with the development of
ATM as a System 6 INIT.
This Mac user used
ATM from
ATM 1.0 until it was rendered obsolete by MacOS X. This Mac user can state without fear of contradiction that
ATM 1.0 sucked! Fonts looked reasonably OK on screen. However,
ATM required several iterations to perfect the layout of text on documents printed by QuickDraw printers.
As for antialiasing, it is my understanding that all
ATM did on the Mac was to render characters on the fly. The System handled
ATM-generated fonts just like it handled bitmapped fonts and TrueType fonts when they became available. Antialiasing would have been done by the System, not
ATM.