Sliding texture [SOLVED]

[SPK]

I have a texture called xx, and I want xx to be a texture that make you slide when walking on it, like ice.
Anyone can tell me the code I must write in "map.shader" file to make this??
Also I've seen this effect on mission_one and atcs on ice, but I dont find the code in any shader file, or I cannot recognice it

I hope someone will help me, thanks a lot!

[Plague Bringer]

It is the "slick" shader. It should be under "common" in GTK Radiant. I'm not sure where the .shader file would be located, though.

[SPK]

Thanks Plague, thats it