GraphScreen Inverter Version 1.0
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Installation:
Send INVERT.8XP to your calculator.

Usage:
First, get the picture you want to invert on the graph screen.  Then,
run the INVERT program.  In about a minute, the entire screen will be inverted to the horizontal pixel that you selected (0-62).  

Send any questions/comments to dyslexic_cow@juno.com