it uses same resivoir as brake fluid. it has a pipe running from brake resivoir to clutch master cylinder underneath it. you can bleed fluid from clutch slave cylider on front of gearbox from the bleed nipple. if clutch pedal has suddenly gone, check fluid level but also check pipe from brake resivoir to clutch cylinder below has no holes in, as they are only plastic and often fail.(can usually see fluid leaking from pipe) new pipe and a bleed usually fixes this.
me, July 2009