I spoke to john about his new jumbo drawing board and asked if i could use his explanation video.
These are boards are like my one board(54x70) that can be bolted together to create very large drawing boards, on the spec sheet he shows a configuration
of 5 foot x 16 feet long thats amazing.
Its all done by a calibration template that you lay on the board joint and tell the software the board size
I have included some pictures and video to show what he has acomplished
http://youtu.be/mFPBntZzq8E
this is a big change on drawing boards size is no limit