Format of NetWare "Get Broadcast Message" reply buffer:
Offset Size Description )
00h WORD (call) size of following results buffer (max 38h)
02h BYTE length of message (00h-37h)
00h if no broadcast messages pending
03h N BYTEs message (no control characters or characters > 7Eh)
SeeAlso: #01821,#02107,#02110