Int 21 Fn 0A00  - Wced V1.6+ - Installation Check                          [K]

   AX = 0A00h
   DS:DX -> 6-byte buffer whose first two bytes must be 00h

Return: buffer offset 02h-05h filled with "Wced" if installed
Program: WCED is a free command-line editor and history utility by Stuart
     Russell

See Also: AH=FFh"CED"