This is our "HyGrid Unplugged" ID. Basically, we (whoever that is) roll out a length of calculator printout paper and draw on it until it looks right. Then someone scans it in, chops it up and uploads all the 100x100 chunks.
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Active/New discussions on SITO have been moved to Google Groups.
Please check out the SITO general and Gridcosm topics over there.