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Graphics Interchange Format  |  1997-01-13  |  43KB  |  504x247  |  4-bit (16 colors)

Labels: text | screenshot | rectangle | font | parallel | line | handwriting | number | post-it note | yellow
OCR: Subject Observer Notify0 Update( Attach(Observer) Delach(Observer) TextSubject -text- TextObserver Replace Text( TextRange) Update( GetText() GetText( TextRange) Figure 1: Observer pattern decouples Subjects from their dependent Observers.

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