You will need the com edition or render to texture plugin
to use it.
In the one hand:
open MED:
File-> New Terrain--> change the count of vertics
--> Set a skin
Edit-->convert to Model--> Save
open WED:
Load a level and put this model into your Level.
Take it, and change a script.
-->Properties -->Behavior --> (template is: "fx_water_mirror")
--> change action
In the other hand:
Same like above, but without mirror.
Look for it in AUM 55.It s a fake mirror for water shader.