Yes! Its me! Finally back after.. well... um.. Ages!
anyway , I've seen this done in some gmod maps.
(yes - I am now a gmod addict)
I think it is whenevr you are in a certain radius of it some text just appears above it (like a sprite , but not )
you can turn around and it still works.
I've also seen someone shove a crap hl2 rp mod..
Had the same things.
If anyone could tell me the entities , i'd love it!
Thanks!