Most of it I've found or worked out. Reading an RYA Laser Handbook and it often talks about block to block. I have not been able to find a definition or glossary term for this anywhere. Thought I'd figured it out as the line in question being tightened until two blocks were block to block with little to no line between them ie mainsheet/kicker. Then I came across the term "more than block to block" which isn't possible with my thought process. Help.