pub type StrFileName = Str63;Expand description
QuickTime 3.0:
The type StrFileName is used to make MacOS structs work
cross-platform. For example FSSpec or SFReply previously
contained a Str63 field. They now contain a StrFileName
field which is the same when targeting the MacOS but is
a 256 char buffer for Win32 and unix, allowing them to
contain long file names.