After a bit of clarification please. My clutch is the verto type and i am tryng to remove it but going through the haynes step by step process I get stuck at pretty much the start

It says ' Rotate the crankshaft until the driving slot in the flywheel, located just behind the flywheel centre bolt head, is horizontal'
What is the driving slot? I think it is the two slots at both sides of the centre bolt, would I be correct in saying that? Didnt want to do it and end up breaking the flywheel which it warns of.
Thanks
Chris