Format of DOS 4.x swappable data area list:
Offset	Size	Description	)
 00h	WORD	count of data areas
 02h  N BYTEs	"count" copies of data area record
		Offset	Size	Description
		 00h	DWORD	address
		 04h	WORD	length and type
				bit 15 set if swap always, clear if swap in DOS
				bits 14-0: length in bytes
SeeAlso: #01690