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Revision c9391aaa376223018f7c8a4d2c92b9cffdb46cfb authored by chou86_e on 13 September 2008, 23:25:27 UTC, committed by chou86_e on 13 September 2008, 23:25:27 UTC 
Don't crash if user asks for nonexistent font size
 

git-svn-id: https://svn.code.sf.net/p/ucblogo/code@199 fc4ef4ee-df3e-0410-84de-fb01f5d6c4f7
1 parent 063fd0f
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clean 
CLEAN

	erases all lines that the turtle has drawn on the graphics window.
	The turtle's state (position, heading, pen mode, etc.) is not
	changed.
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