1: Auto-Attack
2: First Skill
3: Second Skill
4: Third Skill
5: Fourth Skill
6: Use Equipped Items
C: Character Panel - Check stats and Class skills.
T: Target - When highlighted on another player pressing T selects their target
L: Quest Log - Brings up a list of the quests that are accepted
F: Brings up your Friends List
U: Brings up the list showing all players in your zone
I: Opens your Inventory
V: Shows the Health Bar under character names
H: Opens up your House Inventory if you're in your house
Space Bar: Makes you jump (note: it only shows on your screen)