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  28  <H3><A NAME="6_5_1">6.5.1 Clipping</A></H3>
  29  <P> By default plots are not clipped outside the plot area for
  30   performance reasons.</P>
  31  <P> This means that if you have manually specified a scale range and
  32   your data is outside that range the plot will be drawn outside the
  33   scale and into the margin.</P>
  34  <P> The clipping algorithm is &quot;perfect&quot; in the sense that for example
  35   line plots where the plot area cuts the line between two data points
  36   the line will be drawn up to the edge of the plot area. The algorithm
  37   used is O(1) in number of data points.</P>
  38  <P> The disabling/enabling of clipping manually is controlled by <A href="../ref/Graph.html#_GRAPH_SETCLIPPING">
  39  Graph::SetClipping()</A></P>
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