By manipulating the ambient light level, you can decrease or increase the illumination of an area. The change in illumination can be gradual (taking as long as 1 minute) or sudden (occurring immediately when you manifest this power). You can alter the level of illumination from its original level at any time during the power’s duration.

Decrease You can decrease the light level of an area by one step (from bright light to normal light, from normal light to dim light, or from dim light to darkness. Creatures with darkvision can see in an area of dim light or darkness without penalty. You cannot create supernatural dark.

Increase You can increase the light level of an area by one step (from darkness to dim light, from dim light to normal light, or from normal light to bright light).

Burst Increase You can use this power to increase the light level of an area by two steps (from darkness to normal light, or from dim light to bright light), but in such a case the power’s duration is only 1 round.

This power cannot stack with itself, even when manifested by another psionic creature, if manifested into the same area. If multiple manifestations of the control light power overlaps in an area, the light level is decreased or increased by only one step (or two steps in case of the Burst Increase manifestation).