First of all it's history link.
I have watched a few competitions and they use a flashlight at night when competing. I don't think this should be allowed. It's compass and map, not compass, map and flashlight or headlight. Fluorescent compass is ok, but a flashlight? Come on, is that orienteering? Might as while use a GPS since that's deviating from the only tools supposed to be allowed in competition.
Who can orienteer at night without a light? I can to some extent.