... is there other corporate areas from other vendors? such as Microsoft Office specific PUAs, or Adobe fonts, or Agfa Monotype fonts? or in some font construction tools?
I suggest you use the search feature of the unicode mailing list, for example with a search for "pua ibm apple" which, with a little bit of digging around threads, yields such things as
Adobe: http://www.unicode.org/mail-arch/unicode-ml/y2003-m04/0277.html IBM: http://www.unicode.org/mail-arch/unicode-ml/y2003-m04/0276.html
Best regards, markus

