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<html>
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<title>Developer's Guide: The Document and Graphics Classes</title>
</head>
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<TD ALIGN="left"><A HREF="devguide-8.html">Curve Objects
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<H1><FONT face="Helvetica,Arial"><A NAME="N1"></A>The Document and Graphics Classes</font></H1>
<P>The document is represented by a tree of graphics objects. The document
consists of one or more layers. Each layer consists of zero or more
primitives or compound objects.</P>
<P>Primitives are the leaves of the tree and contain no other graphics
objects, examples are Rectangles or PolyBezier objects. Most primitives
can have <A HREF="devguide-19.html">line and fill properties</A> (Text objects
currently can only have fill properties and image objects have neither
fill nor line properties).</P>
<P>Compound objects are graphics objects that contain other graphics
objects, examples are the ordinary Group or the BlendGroup.</P>
<H4><FONT face="Helvetica,Arial"><img SRC="Images/bullet.png" WIDTH="9" HEIGHT="9"><A HREF="devguide-10.html">Class Hierarchy
</A></font></H4>
<H4><FONT face="Helvetica,Arial"><img SRC="Images/bullet.png" WIDTH="9" HEIGHT="9"><A HREF="devguide-11.html">The class GraphicsObject</A></font></H4>
<H4><FONT face="Helvetica,Arial"><img SRC="Images/bullet.png" WIDTH="9" HEIGHT="9"><A HREF="devguide-12.html">The class Bounded
</A></font></H4>
<H4><FONT face="Helvetica,Arial"><img SRC="Images/bullet.png" WIDTH="9" HEIGHT="9"><A HREF="devguide-13.html">The class HierarchyNode
</A></font></H4>
<H4><FONT face="Helvetica,Arial"><img SRC="Images/bullet.png" WIDTH="9" HEIGHT="9"><A HREF="devguide-14.html">The class Protocols</A></font></H4>
<H4><FONT face="Helvetica,Arial"><img SRC="Images/bullet.png" WIDTH="9" HEIGHT="9"><A HREF="devguide-15.html">The class Selectable</A></font></H4>
<H4><FONT face="Helvetica,Arial"><img SRC="Images/bullet.png" WIDTH="9" HEIGHT="9"><A HREF="devguide-16.html">The class Primitive</A></font></H4>
<H4><FONT face="Helvetica,Arial"><img SRC="Images/bullet.png" WIDTH="9" HEIGHT="9"><A HREF="devguide-17.html">The class Compound</A></font></H4>
<H4><FONT face="Helvetica,Arial"><img SRC="Images/bullet.png" WIDTH="9" HEIGHT="9"><A HREF="devguide-18.html">The class Rectangle</A></font></H4>
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