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<A HREF="#index.htm">Ruler Object Library</A>: 4.1 <A HREF="#Ruler_4.htm">Managing Rulers</A>: 
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RulerShowControl</H3>
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The RulerShowControl allows the user to show or hide rulers. This control works by setting RulerViews not usable. However, objects which aren't usable don't work with GCN, and thus you will need to set up some other object to intercept the appropriate notifications. Don't try to include a RulerShow