INT 62 u - FGDRIVER v4.02 - "FG_VBCOPY" - COPY RECT BETWEEN VIRTUAL BUFFERS
	AX = 00CFh
	ES:BX -> variable record (see #03510)
	CX = handle for source virtual buffer
	DX = handle for destination virtual buffer
Notes:	the FGDRIVER functions are rearranged with each major release, but
	  their parameters do not change (see #03474)
	if the destination buffer is the same as the source buffer, the regions
	  must not overlap
SeeAlso: AX=00D0h,AX=00D1h,AX=00D4h,AX=00D6h,AX=00D7h


Format of FGDRIVER VBCOPY variable record:
Offset	Size	Description	(Table 03510)
 00h	WORD	source region's left edge
 02h	WORD	source region's right edge
 04h	WORD	source region's top edge
 06h	WORD	source region's bottom edge
 08h	WORD	X coordinate of destination's upper left corner
 0Ah	WORD	Y coordinate of destination's upper left corner