The icon is added to the status line. SaveScene+ will save the current scene as a new version, for example, if the current scene name is "myScene.mb" the scene will be saved as "myScene_v01.mb". The next time the SaveScene+ icon is pressed the scene will be saved as "myScene_v02.mb" and so on.
If the current scene already has some kind of numbering, SaveScene+ will just increase the version, for example, if the current scene is "myScene5.mb" the scene will be saved as "myScene06.mb".
If you want to add SaveScene+ to your Hotkeys, map the command "dp_SaveScenePlus" to you desire key combination.
The script has been tested with Maya 6.X, 7.X and 8.X, but it should work with other versions as well.
Installation:
Use the installer or copy the files to the specified
destination: