Primary character

Realm

Military

Council

Court

Intrigue

Factions

Decisions

Encyclopedia

Character Finder

Find Title

Issues (suggestions based on your situation)

Console

"Back" on many screens

County Development

Realms

Governments

Kingdom Titles

Simple Terrain

Development

Counties, De Jure

Empire Titles

Faiths

Cultures

Duchy Titles

Houses

Show multiplayer participants

Raise all Armies (when military screen is open)

Split in Half

Merge selected units

Split off new Army

Add waypoint

Add or remove a unit from selection

Select only naval units

Select only units of the same type as the selected unit

Speed 1 (lowest speed)

Speed 2

Speed 3 (normal)

Speed 4

Speed 5 (fastest, limited by computer's speed)

Pause/Unpause

Decrease game speed

Increase game speed

Move camera

Move camera left

Move camera right

Move camera up

Move camera down

Center screen on home county

Take a screenshot in /Documents/Paradox Interactive/Crusader Kings III/Screenshots

Steam overlay screenshot