220.127.116.11. Viewing Available Clock Networks in Chip Planner
Depending on the clock layers that you activate in the Layers Settings pane, the Chip Planner displays regional and global clock regions in the device, and the connectivity between clock regions, pins, and PLLs.
Clock regions appear as rectangular overlay boxes with labels indicating the clock type and index. Select a clock network region by clicking the clock region. The clock-shaped icon at the top-left corner indicates that the region represents a clock network region.
Spine/sector clock regions have a dotted vertical line in the middle. This dotted line indicates where two columns of row clocks meet in a sector clock.
To change the color in which the Chip Planner displays clock regions, select Tools > Options > Colors > Clock Regions.