BossPrefs Dock Control is an add-on to the BossPrefs application (you will need to have a BossPrefs installed before installing BossPrefs Dock Control). The BossPrefs Dock Control allows you to toggle on/off an application called Dock. However, before you can use BossPrefs to toggle Dock, you will need to have Dock installed. Because Dock is an application that is always present, I think it is nice to have the ability to toggle it off. You can get the BossPrefs Dock Control and BossPrefs through the BigBoss source.