Whenever a GT or a COMMON block in the hardware window, a Link in the Links window, or a scan in the Scans window is selected, the properties of that object shows in the Properties window. For GTs and COMMONs, these include all the attributes, ports, and other settings of those objects. These settings can be changed in the Properties window (see the following figure), or by writing Tcl commands to change and commit the properties. Some properties are read-only and cannot be changed.
Figure 1. Properties Window