If you select an object in the world, the following properties become available...
Id - Identifier for the object that is unique within this scene.
Type - The identifier of the bitmap in the bitmap list to which this object refers.
Edit Sequences - Brings up the Edit Sequences window for this object to control its movement.
Visible (run-time) - Determines whether the object is drawn at runtime or not.
Opacity - How opaque the object is (1-transparency).
Collision Detection - If checked, the object will become part of the 2D collision detection system. Click the Advanced button to restrict which types it can collide with.