Basic Game Controls for Ragnarok Online

[Benny]

Source http://irowiki.org/wiki/Basic_Game_Control

Some of these are pretty new to me:
/skip — Widens frame skip. This is recommended for players who lag excessively.
/emblem — Toggles the display of guild emblems
/invite "<name>" — Invite a person to your party. Works across different maps.
/mineffect or /minimize — Enables less graphically intense effects. This command does not work for Wizard's AoE skills.
/lightmap — Removes shade effects and a majority of lighting effects.
/merai — Switches Mercenary AI between default and custom mode.
/font — Switches the position of character name, party name, guild name, guild title, and emblem to above or below character sprites.
/booking — Opens party recruitment listing search window
/recruit — Opens the party recruitment listing creation window

[doggsta]

left out /effect