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Quote: Sketchpad provides general functions for expansion of instances, recursive deletion, and recursive merging of subpictures
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Topic:
direct manipulation for a UserInterface
Topic:
generic operations and polymorphism
Quotation Skeleton
In order of historical development, the recursive functions … subpictures within subpictures to as many levels as … order to maintain consistency in the ring structure. … picture parts, making possible application of complex definitions … Google-1 Google-2
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Topic: direct manipulation for a UserInterface (56 items)
Topic: generic operations and polymorphism (65 items)