This is a tiny LibDataBroker plug-in with code plagerized from trojaso's superb Broker Switcher http://www.wowinterface.com/download...rSwitcher.html.
Simply put, it's a quick way to switch between spell detail on and off. Many thanks to Trojaso for the idea (it's one I've been meaning to make for so long).
Note: The Spell detail settings are being completely overhauled for 3.1, but this is a handy toy in the meantime
Like all LibDataBroker plug-ins, Broker Switcher requires a data display addon like DockingStation or ButtonBin.