Int 2F Fn B706  - Dos 4.0+ Append - Get Append Function State              [f]

   AX = B706h

Return: BX = APPEND state (see #2664)

See Also: AX=B700h,AX=B707h

Bitfields for APPEND state:
Bit(s) Description (Table 2664)
 0 set if APPEND enabled
 1-11  reserved
 12    (DOS 5.0) set if APPEND applies directory search even if a drive has
     been specified
 13    set if /PATH flag active
 14    set if /E flag active (environment var APPEND exists)
 15    set if /X flag active