A process includes: injecting a steam composition into a subterranean location containing bitumen, the steam composition containing an alkylene glycol ether and steam, wherein the alkylene glycol ether is other than a glycol ether amine; and recovering bitumen from the subterranean location to above the ground. The current to be handled by the FET may be divided among a set of electrodes arrayed along the width of the source or drain fingers and oriented to cross the fingers along the length of the source and drain fingers. An operating force or a return force is adjusted by controlling an application or release of the driving voltage. Diagram policies specify conditions for customizing properties of a diagram element.