INT 16 - PC Tools v5.1+ DESKTOP API - ???
AX = FFC1h
BL = ???
ES:DI -> data structure (see below)
???
Return: AX = ???
Note:   available only when popped up

Format of data structure:
Offset  Size    Description
00h    WORD    ???
02h    WORD    ???
04h    WORD    ???
06h    WORD    ???
08h    WORD    ???
0Ah    BYTE    ???
0Bh    BYTE    ???
???


16FFC1 - PC Tools v5.1+ DESKTOP API - ???