In a method of a technology for visual workflow process notation and layout, a workflow process graphical user interface is generated. The elastic cord has a fixed end, the first handle located adjacent to the fixed end. More specifically, hydraulic andor other relatively massive motor means of the robotic arm mechanism are mounted to the rear of a refuse-containing wall of the intermediate container. It also includes learning a latest possible position of the laser beam along the direction of laser scan travel where the laser beam can be turned on and still have the sensor assert a signal indicating it has been sufficiently impinged upon by the laser beam.