Find information on the object and face you click.
Drop the script into any object and then, simply click on the face or object you need to know the informations. After that, you should see something similar to this in your local chat:
[08:57:14] Kynno - Face Informations: Informations on click
Prim name: Kynno - Face Informations
Link number: 0
Face touched: 3
Color of face: <1, 1, 1>