CLEAR                    Reset All Variables

 CLEAR

    Sets all numeric variables to 0 and all string variables to null.
    CLEAR also turns off any event trapping that is on.

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      Notes:    CLEAR destroys pending return addresses left on the stack
                by GOSUB, FOR/NEXT, and WHILE/WEND.

                Unlike the Interpreter, Turbo Basic doesn't let you
                dynamically set stack and data space by means of CLEAR.