Simpletext

Apple has released the source code for a Carbon version of SimpleText in the Mac OS X Panther Developer Tools.

SimpleText can even record short sound samples and, using Apple's PlainTalk speech system, read out text in English.

SimpleText could support multiple fonts and font sizes, while TeachText supported only a single font per document.

SimpleText style information was stored in the file's resource fork in such a way that if the resource fork was stripped (such as by uploading to a non-Macintosh server), the text information would be retained.