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Graphics Interchange Format  |  1999-09-30  |  35.5 KB  |  345x326  |  4-bit (16 colors)
   ocr: Type Description Template Acombination otihe remaining four methods torming analgonthm. Subclasses: typically dont change this momod. and, simply: ovorride the methods they call. concrete Amethod.ihard-coded bythe abstract.class that doesntget overridden bythe subclasses. In Delphi, this - isastatic method. Abstract Amehod: declared by, and mplemented by, each subciass. in Delphif the keyword abstract i5 usedto deine fhistype of method: Hook Amethod-thot provides: default functionality, and thar: may: be overridden by subclasses. In Delphi, this 1ihe virtualor dynamic method. Event Apointer to ...