Aura

s are visual representations of energy emanations in Ragnarok Online and Ragnarok Online II. In each game, s are used in different ways to build up characters.

Ragnarok Online
In RO, s are used to represent max level status. The original at level 99 is a cyan  that is condensed around the character. Characters that rebirth and reach 99 receive a violet tint to the edges of the original. When the max level was changed to 150, the original was changed to blue and expanded into a spherical cloud. When the max level was changed to 160, the was changed from blue to yellow.

There are 2 chat commands that can be utilized if s cause performance issues:
 * /aura - simplifies s
 * /aura2 - hides s completely

Ragnarok Online II
In RO2, s are cosmetic effects rather than representations of max level. s are imbued onto top armor equipment and becomes a permanent part of the armor. There is currently no way to remove an from the armor once it is applied aside from using it in Transmogrification.

Armor can only be imbued with one at a time. Applying a new to the same armor will overwrite the previous.

Patches
Ragnarok Online Ragnarok Online II
 * Patch (2016 Dec. 14)
 * The /aura2 command is added to enable/disable the aura.
 * Patch (2003 Sept. 08)
 * Added the /aura command. You can use this command to turn on and off the 99 level effect if it is uncomfortable or boggy.
 * iRO2 Update (2016 Jan. 28)
 * Added Aura System.