Thank you Peter!
I've had my L42 for nearly twenty years now and have always wondered what, those bits were for, searched the on line photo archive for what went where but they were always empty. An excuse for an update to the green bible I feel........prehaps a colour version this time!
and yes have been away for a bit or just festering in the back ground, pressures of work and paying off the national debt single handedly ( or that what it feels like! ) but I digress.

over to you fellow Milsurpers anyone out there who has some/all of the slots filled post a photo.

and again thanks to Peter for the informative and witty reply