This shortcut is used by 1045 programs in our database.
There isn't any generic description for this shortcut.
What this shortcut does in different programs?
All programs using this shortcut, by category.
Crusader Kings II - Dynasties. Colored according to largest realm, so flipping with "realms" view lets you see which dynasties control multiple realms. Ctrl + click a realm to see the dynasties controlling its subrealms.