Abstract: If you want to detect which of the three prims was touched, you need to put a script into each prim with a touch event handler specified. Even though they are linked, each touch event will occur separately. If you then want a main script to do something based upon which prim was touched, you could have the touched prim send a link message a script running in the root prim to indicate which prim was clicked on and what action to take. For more information on the touch event, and also link messages, see the LSL scripting wiki….