The CHOP Viewer is a 2D graph used to preview and edit CHOP channels. Any pane in TouchDesigner can be set to CHOP Viewer (shortcut alt+5).
The path for the CHOP viewer can be set to a particular CHOP or a network. The Display Flag of the CHOP(s) must be turned on to view the channels in the CHOP viewer. When set to a network (ie no specific CHOP), the viewer can display channel from multiple CHOPs. The viewer can be divided into multiple graphs in 3 modes, Graph Per Single Channel, Graph Per CHOP, or Graph Per Channel Name.