Int 88  - Apl*plus/pc - Determine Name Status                              [r]

   AL = F9h
   ES:SI -> name
   CX = length of name

Return: CF set if name ill-formed or already in use
       BX = STPTR if already in symbol table
   CF clear if name is available for use
       BX = 0000h

Note:  does not force the name into the workspace

See Also: AL=FEh,AL=FFh,INT C8"APL"