In a recording tape cartridge, a reel has a reel hub around which a magnetic tape is wound. In one example approach, a method comprises indicating a leak in response to a temperature change in a fuel vapor canister coupled to a fuel tank in an emission control system while the engine is in operation and a purge valve is closed. Desired ones of the directories are selected from the displayed directories and are loaded. Thus, the invention provides methods of identifying modulators of these proteins. The word line driver receives a global word line signal that remains active while the word line signal is asserted and subsequently de-asserted, and the word line signal is coupled between a positive supply voltage and a supply voltage below ground.