I haven't made mods in a while, and I can't remember what the key combination is for "activating" your light markers in the render window.
Whenever I move an object in a cell, the light markers go out and stop emitting light, and I remember there being a key combination that makes them emit light again but I can't remember it for the life of me, and the official GECK tutorial pages don't make a mention of it.
I'll delete this as soon as I get an answer since it's such a simple thing, but it's driving me nuts and halting my progress really badly.
Edit: It's F5
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