using System;

[Obsolete("You seem to compile with a very early version of Unity 5. Unfortunately, Unity 5.0.0 has a bug in its terrain engine (http://issuetracker.unity3d.com/issues/raycast-when-terrain-is-changed-but-not-saved-raycasthit-dot-point-returns-incorrect-value). The minimal required Unity 5 version for the terrain editor to work is Unity 5.0.0p3 (not 5.0.0f4). Get the patched Unity version here: http://unity3d.com/unity/qa/patch-releases/5.0.0p3")]
public class Unity5_Terrain : Attribute
{
}