Compatibility: 4.0+
Expects: AX    b707H
BX    an AppendOptsRec bit-record defining desired settings (clear
bit 0 to disable APPEND).
                                                                  
Returns: CF    Carry Flag clear (NC) if no error
                                                                  
Info: This changes the various APPEND.EXE option settings.

INT 2fH b706H for the layout of the bits in the BX register.

Notes: These settings are system-global.  Before making changes, use
INT 2fH b706H (query settings) and save the result.  Then restore
the saved settings before terminating your program.

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INT 2fH b707H: Set APPEND.EXE Options / Disable APPEND