Press the left mouse button to attack. Press the mouse wheel button to rotate the view. Drag the item that stack together to an empty space will split it. Put the potion from the inventory to the item shortcut menu at the top left, and the potion can be used by pressing the shortcut key. Move while holding down the 'Alt' button to ignore the influence of monsters and private markets. Hold down 'Alt' to pick up item without being influenced by the surrounding. Press 'C' to view the character information. Press 'K' to view the skill information. Must purchase the skill books from the class trainers in order to learn skills. Put the skills from the skill window to the skill shortcut menu at the left, and the skill can be used by pressing 1~0 (for A Type), 1~5, Q~T (for B Type). Press the right mouse button to use the skill. Select the other character by holding down 'Shift' and press the left mouse button to view the menu on that character. Scroll the mouse wheel to zoom in and out. Press 'X' to switch between combat and non-combat mode. Holding 'Ctrl' while purchase item to purchase the item faster and no need to go through the confirmation. Press space bar to pick up item. Press 'D'(Type B) or 'T'(Type A) to view the quest information. Press 'M' to view the map window. Press 'R' or 'NumLock' to switch between walk and run mode. Press 'Tab' to maximize/minimize the item shortcut menu at the top left of the screen. Press '`' to maximize/minimize the skill shortcut menu at the left of the screen. Press 'H' to view the online help window. Press 'I' to view the inventory window.