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devguide.htmlDeveloper's Guide devguide-19.htmlThe Undo Mechanism
The Document and Graphics Classes
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.
Primitives are the leaves of the tree and contain no other graphics
objects, examples are Rectangles or PolyBezier objects. Most primitives
can have line and fill properties (Text objects currently can only have
fill properties and image objects have neither fill nor line
properties).
Compound objects are graphics objects that contain other graphics
objects, examples are the ordinary Group or the BlendGroup.
devguide-10.htmlClass Hierarchy
devguide-11.htmlThe class GraphicsObject 
devguide-12.htmlThe class Bounded 
devguide-13.htmlThe class HierarchyNode 
devguide-14.htmlThe class Protocols 
devguide-15.htmlThe class Selectable 
devguide-16.htmlThe class Primitive 
devguide-17.htmlThe class Compound 
devguide-18.htmlThe class Rectangle 
devguide-8.htmlCurve Objects
devguide.htmlDeveloper's Guide devguide-19.htmlThe Undo Mechanism
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