http://feeds.boingboing.net/~r/boingboing/iBag/~3/uNzW2lR...

Sharpie is to sell a 'liquid pencil,' a pen with erasable ink made from graphite that only becomes permanent after three days' exposure to the air. Introducing The NEW Sharpie LIQUID PENCIL [Sharpie via Wired] In the meantime, it may be rubbed out with a standard eraser. It'll hit stores this fall.

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