One of the fixed buttons in the Object window.
You can choose this command after selecting one object of any type.
The Object window copies the selected object, and all the data it contains, to a new object, which will appear at the bottom of the List of Objects.
If you select "Sound hallo" and click `Copy...', a command window will appear, which prompts you for a name; after you click OK, a new object will appear in the list, bearing that name.
© ppgb, October 18, 2011