INT 21 - Novell NetWare - WRITE NAME SPACE INFO                                 
	AX = F257h subfn 19h
	CX = length of request packet in bytes
	DX = 0000h (no reply packet)
	DS:SI -> request packet (see #02413)
	ES:DI ignored
Return: AX = status (see #02860 at INT 2F/AX=7A20h/BX=0000h)
SeeAlso: AH=F2h"Novell",AX=F257h/SF=17h,AX=F257h/SF=18h


Format of NetWare "Write Name Space Info" request packet:
Offset	Size	Description	(Table 02413)
 00h	BYTE	19h (subfunction "Write Name Space Info")
 01h	BYTE	source name space (see #02387)
 02h	BYTE	destination name space
 03h	BYTE	volume number
 04h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	directory entry number
 08h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	namespace information bitmask
 0Ch 512 BYTEs	namespace-specific informatin