The present invention relates to a non-contact arc detection, recognition, and warning apparatus for the detection of arcing in an electrical system. The recessed top is at least 20-80% of the area of the entire cap and has a thickness from 0. An iterative process based on priorities determined for the ready nodes is then performed to determine which ready nodes to block from transmission and which ready nodes to clear for transmission. The data may itself describe services needed by the device, or it may identify a location at which this information can be found. The tool receives a configuration of the plurality of received selections in the workspace. According to one aspect of the present invention a graphic list may be partitioned, and the graphic-list partitions may be rendered \u201cout-of-order\u201d or concurrently.