Most of the schema editing is done in the desktop, where each schema in the project is displayed in a separate schema window, an independent component in the desktop. In addition, some options about items can be defined through the different tabs at the properties panel, and the different items in the related context menu. Figure 6 shows the ICOM window with two schema panels. The currently selected schema window is always shown with a yellow border.
There are several fundamental operations in ICOM.