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Returns the status of a joystick trigger.

STRIG(n%)

    ■ n%    A value that specifies a joystick status condition:

            n%    Condition
            ══    ════════════════════════════════════════════════════════
            0     Lower joystick A trigger was pressed since last STRIG(0)
            1     Lower joystick A trigger is currently pressed
            2     Lower joystick B trigger was pressed since last STRIG(2)
            3     Lower joystick B trigger is currently pressed
            4     Upper joystick A trigger was pressed since last STRIG(4)
            5     Upper joystick A trigger is currently pressed
            6     Upper joystick B trigger was pressed since last STRIG(6)
            7     Upper joystick B trigger is currently pressed

    ■ STRIG returns -1 if the condition is true, 0 otherwise.

Example:
    PRINT "Press Esc to exit."
    DO
        IF STRIG(0) OR INKEY$ = CHR$(27) THEN EXIT DO
    LOOP
    DO
        BEEP                  'BEEP while trigger A is pressed.
    LOOP WHILE STRIG(1)

See Also    ◄STICK►    ◄STRIG, ON STRIG Statements►
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