Which of the common textures work in Nexuiz?

[Rad Ished]

Hi there folks
When you load Radiant and the common spog textures, which ones actually do something? There are all sorts of exciting things like slick, mirror and portal but I'm sure they don't do anything in Nexuiz, or do they ?
Definitive list/answer anybody?

[KadaverJack]

Those textures are not supposed to be used. They are just placeholders for shaders so that you are able to distinguish different shaders in gtkradiant.

[Rad Ished]

Thanks for quick response Kadaver.
Not even the clip ones? they work and caulk does too. Which ones are placeholders and which ones work? Is it possible to tell this by reading their .shader? if so how?
Also would it be a good idea to remove the ones that are irrelevent, or is this a bad idea, or even possible?