I can only offer humble apologies if I have offended a Crab. No malice was meant it is just the Armed Forces humour that we Matelots and or the Pongos are famous for.
Mind you MPN11 chinagraphs still very much the weapon of choice. It does tend to upset the maintainers when you use in on a plastic LCD screen but hay life in a blue suit. I also have that warm feeling when ever I need to unravel a bit more of the paper from the end of the pencil. Don't know why.