INT 21 - Novell NetWare v3+ - ADD USER DISK SPACE RESTRICTION                   
	AX = F216h subfn 21h
	CX = length of request packet in bytes
	DX = length of reply buffer in bytes
	DS:SI -> request packet (see #02132)
	ES:DI -> reply buffer (ignored)
Return: AL = status (see #02860 at INT 2F/AX=7A20h/BX=0000h)
SeeAlso: AX=F216h/SF=20h,AX=F216h/SF=22h,AX=F216h/SF=24h


Format of NetWare "Add User Disk Space Restriction" request buffer:
Offset	Size	Description	(Table 02132)
 00h	WORD	000Ah (length of following data)
 02h	BYTE	21h (subfunction "Add User Disk Space Restriction")
 03h	BYTE	volume number
 04h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	(big-endian) object ID
 08h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	(big-endian) disk space limit in 4K blocks
		00000000h to 40000000h