INT 31H 000bH: Query Descriptor

                                                    Compatibility: DPMI 0.9+ 
 Expects: AX    000bH
          BX    selector
          ES:DI (or ES:EDI) sel:off of 8-byte buffer to receive data
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 Returns: CF    NC (clear) if successful; else AX = DPMI Error Code
          ES:DI (or ES:EDI) buffer contains LDT entry
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    Info: This copies an LDT entry into a local buffer.

    Note: Use INT 31H 000eH to get multiple entries.

See Also: DPMI API
          INT 2fH: Multiplex Interrupt
          DOS Functions
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