The desktop calls such as FPAddIcon are documented in two places: Inside
AppleTalk and the AppleTalk Filing Protocol (AFP) Engineering Technical Notes.
Both of these are available from APDA. For programming purposes, we recommend
the Technical Notes; we suggest Inside AppleTalk for a theoretical
understanding of the internals of AppleTalk.
(NOTE: These calls are currently available only for AppleShare. They are not
supported for local volumes.)