ough the reference point with the negative of the present vector slope.</P>

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<A HREF="#index.htm">Ruler Object Library</A>: 4.6 <A HREF="#Ruler_4.htm">Managing Rulers</A>: 
Esoteric Messages</H3>
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For the most part, the ruler will work together with the main view to coordinate updates. This is done by means of messages going to the ruler. Subclasses of VisRulerClass might conceivably intercept these messages to alter behavior.</P>

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