Format of FaxBIOS GRAPH_CREATE_FILE command buffer:
Offset	Size	Description	)
 00h 12 BYTEs	common data (see #02935)
 0Ch 80 BYTEs	filename
 5Ch	WORD	graph handle
 5Eh  6 BYTEs	future expansion
 64h	WORD	structure size
SeeAlso: #02948,#02950,#02951