How to find top dead center on a 1600cc 8v 1998 renault megan?

Im changing my head gasket and need to find TDC as stated in the haynes manual for the car. It says "Look through the aperture at the flywheel end of the engine and continue turning crankshaft until the TDC timing mark on the flywheel/driveplate is aligned with the TDC mark on the gearbox bellhousing." I cant see the timing mark on the flywheel/driveplate. Anyone know what this looks like or where it should be?

Many thanks,
Sean