SetFog

// Set the fog properties for oTarget. // - oTarget: if this is GetModule, all areas will be modified by the //  fog settings. If it is an area, only that area will be modified. // - nFogType: FOG_TYPE_* //  -> FOG_TYPE_SUN, FOG_TYPE_MOON, FOG_TYPE_BOTH // - nColor: FOG_COLOR_* //  -> You can also pass in a hex RGB number that corresponds to the fog color. // - fFogStart //  -> The distance at which the fog starts. // - fFogEnd //  -> The distance at which the fog ends and is at its full color. // - fFarClipPlaneDistance //  -> The distance at which the world dissapears into the skybox. // * Note that this function has changed in NWN2. // * Note that you can use FOG_TYPE_BOTH for the nFogType parameters to set both the MOON and //	 SUN fog types. void SetFog( object oTarget, int nFogType, int nColor, float fFogStart, float fFogEnd, float fFarClipPlaneDistance);