Well, I checked up the outliner and something funny happened while playing around… I’ll better tell what did I did:
-I made a Cube a Cylinder and a Sphere in different places so they could be easily seen, to all of them I gave a custom ME name so it didn’t look like “ME:cube–OB:cube”, let’s say “cubeME”, “sphereME” an “cylinderME”.
-In the outliner, there were all the elements of the scene, the objects appeared with their “OB” name, and the editable version of them had the “ME” name.
-Then, selecting one of them, let’s pick the cube, I changed his ME name and selected the one of the sphere, doing so made the cube thansform into the sphere!!
-Witchever of “those 2” spheres I modify in the edit mode, both change.
-Looking at the outliner I see that both “OB” name rest the same as they where originally, but the name at the edit icon of both turned out to be the same (in this case “sphereME”).
-Then I renderised and the results where the same as the 3D view.
Not really sure for what this may be used… The example of the game engine used it to change the shape of the active object instantly, with IS usefull indeed, but in what else?to reference the same object with the same animation over the place?