Format of APPC/PC "DISPLAY" control block:
Offset	Size	Description	)
 00h 12 BYTEs	reserved
 0Ch	WORD	1B00h (verb "DISPLAY")
 0Eh  6 BYTEs	00h
 14h	DWORD	(big-endian) return code (see #03668)
 18h	WORD	00h
 1Ah  8 BYTEs	(big-endian) logical unit ID
 22h  8 BYTEs	(big-endian) partner logical unit name
 2Ah  8 BYTEs	(big-endian) mode name
 32h	BYTE	logical unit session limit
 33h	BYTE	partner logical unit session limit
 34h	BYTE	node maximum negotiable session limit
 35h	BYTE	current session limit
 36h	BYTE	minimum negotiated winner limit
 37h	BYTE	maximum negotiated loser limit
 38h	BYTE	active session count
 39h	BYTE	active CONWINNER session count
 3Ah	BYTE	active CONLOSER session count
 3Bh	BYTE	session termination count
 3Ch	BYTE	bit 7: SESSION_TERMINATION_TARGET_DRAIN
		bit 6: SESSION_TERMINATION_SOURCE_DRAIN