END                      Terminate Program or Structured Block

END [{DEF | IF | SELECT | SUB}]

    Terminates execution of a program, closes all files opened by the
    program, and returns control to the operating system. Or terminates a
    multi-line function definition, a multi-line IF/THEN/ELSE construct, a
    SELECT CASE construct, or a procedure (subprogram).

   -------------------------------------------------------------------------

      Notes:    END, without argument, terminates execution and returns
                control to DOS or to Turbo Basic.

                END as the last (highest-numbered) instruction in a
                program is optional.