>> I was just looking at a site explaining how to build one, and I 
>> suddenly had a killer flash of inspiration: THERMAL PAPER and a LASER 
>> POINTING DEVICE!
>>
>> Think about it - 100% friction-free graphing! EPIC WIN!!!
> 
> Tell me how you want to move the laser friction free.

Well OK, let me rephrase: "with vastly less friction than dragging a pen 
across paper". That better? :-P

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*

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