New to the Oly menu system, coming from the simplicity of the tabbed layout of the Pentax system I'm finding Oly's menu non-intuitive to say the least. Anyway, I'll get there. But for the moment I'm not clear on 'B' Button/Dial>>Button function>>2nd screen>>L-Fn I can find no explanation in the manual (page 100) so I have no clue yet where L-Fn is? It's certainly not a button on the body. If it's a button on the touch screen, well I can't see that either. Would appreciate help?