Int 2F Fn 2709  - Dr-dos 6.0 Taskmax - Name Task                           [T]

   AX = 2709h
   DX = task index
   DS:SI -> 8-byte name (8 NULs = remove name)

Return: AL = task flags
       00h ID unused or task terminated
       01h ID in use, task name table entry valid
       81h ID in use, task name fixed
   BX = task ID
   ES:DI -> name in task name table (see AX=2701h)

Note:  the task retains the given name until it terminates or the name is
     removed by specifying a name of 8 NULs.

See Also: AX=2701h,AX=2707h