Show / Hide the interface

(When building) Rotate the consturction

Hide the terrain, display the grid

Show the construction grid

Select your entire army

(hold) Display health bars of all units on the screen

(hold) Stop your unit and let them prepare their weapon

Pause the game

Assign units or buildings to a control group

Recall a control group assigned earlier

Select unit

Select all units of that type on the screen

Select all units of that type

(When selling in the market) Speed up sell rate