The Line-Side display was used to quickly display conformance to defined tolerances to assembly line workers. It consisted of two separate programs; the Data Manager and the Graphical Annunciation Screen. The Data Manager received data from vision Gauges via OPC messages. It then sent that value and the current tolerances for the point to the Graphical Annunciator via Microsoft Message Queue. The Annunciator then displayed the setting as red / Yellow / Green depending on how close the measurements were to the ideal value.