MIA, Ask an Expert: turtle as eraser [MWForum Archive]

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To:	askanexpert@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Subject:	MIA, Ask an Expert: turtle as eraser
From:	askanexpert@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Date:	Wed, 10 Oct 2007 06:49:35 -0600 (MDT)

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from: Doug Alexander <dalexander@xxxxxxxxxxxxxxxxx>
date: Wed Oct 10 06:49:35 2007
platform: Mac OS10
version: MicroWorlds Ex

How do I make a turtle turn into an eraser to erase parts of the 
existing turtles? I'm trying to enhance the FallIntoPlace example 
on the MicroWorlds site, but I need a way to erase lines and "drop" 
the remaining turtles one row down. Not sure this is possible - help?

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