Sometimes it is time consuming to search any specific command button in Revit UI.
When I simply know the command name from other places like from a tutorial but forgot the location of that button in UI and I need to search for it in every TAB probably! But as I could remember the command name only, by typing it in command line like Rhino, ACAD, easily will chock out.
Sometimes it will be useful if any command that I thought off is available yet in Revit.