Yes, its real. Its on monorail.
And its because of custom spectrum values, yo ucan set them higher or lower meaning that only certain things will show them. For example, standard map lights have a lower spectrum value compared to weapons and the flashlight, which means you can only see it by pointing the flashlight at it.
This is a pic, not a link:
http://www.quake2evolved.com/blurforum/ ... stid=21226