INT 21 - Novell NetWare - MODIFY FILE OR SUBDIRECTORY DOS INFORMATION           
	AX = F257h subfn 07h
	CX = length of request packet in bytes
	DX = 0000h (no reply packet)
	DS:SI -> request packet (see #02389)
	ES:DI ignored
Return: AX = status (see #02860 at INT 2F/AX=7A20h/BX=0000h)
SeeAlso: AH=F2h"Novell",AX=F257h/SF=04h,AX=F257h/SF=08h


Format of NetWare "Modify File or Subdirectory DOS Information" request packet:
Offset	Size	Description	(Table 02389)
 00h	BYTE	07h (subfunction "Modify File or Subdirectory DOS Information")
 01h	BYTE	name space (see #02387)
 02h	BYTE	reserved for future use
 03h	WORD	search attributes
 05h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	modify DOS mask
 09h		Modify DOS information structure