zPlate = chain 1 [
        message "Begin with the back side of the plate"
        , back
        , message "Place the front side face up, centered on the lower area of the part"
        , front1
        , message "Place the part to machine the upper area of the front side"
        , pause
        , front2
        ]
zPlate = chain 1 [
        message "Begin with the back side of the plate"
        , back
        , message "Place the front side face up, centered on the lower area of the part"
        , front1
        , message "Place the part to machine the upper area of the front side"
        , pause
        , front2
        ]
zPlate = chain 1 [
        message "Begin with the back side of the plate"
        , back
        , message "Place the front side face up, centered on the lower area of the part"
        , front1
        , message "Place the part to machine the upper area of the front side"
        , pause
        , front2
        ]