Shows HP/MP/EXP bars and basic stats. (Attack/Accuracy and Defence/Evasion)

Shows the buff icons of positive and negative effects on the character.

Shows your coordinates and the location of the monsters, the other players and NPCs.

Register skills you frequently use here. You can access one of them by pressing its corresponding number of your keyboard.

With your skill window open, left-click a skill and drag it over an available number, then release it.

[X] or [Y] allow you to switch between your first set of quickslots to your second on the fly. You can also switch between the two quickslots by pressing [ ` ].

Shows shortcuts to various menus.

Shows what sort of messaging to read(checked) or skip(unchecked).