Controlling Light Intensity?

[U238]

This may be a stupid question but how do I control a meshlight's intensity? Everything I've rendered with indigo using meshlights has a horrible glare from too much lighting? Is it something right under my nose in blendigo? Or is it adjusted through the xml file?

Thanks in advance.

[Gog]

select the mesh light, then in blendigo go to the material tab,

There is a power and efficacy setting for the light next to the material colour setting.

[U238]

I messed with those settings and neither of them appeared to really do anything. What exactly are each of those settings supposed to do? (Manual wasn't much help)

I assume the power controls how strong the light is by default and efficacy is the "volume" knob?

[Gog]

Power is how much energy you put in efficacy you can treat as how efficient the source is at converting power to light

There's a handy table at wikipedia http://en.wikipedia.org/wiki/Luminous_efficacy