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(After the story "Hansel and Gretel" by the Brothers Grimm).1. Links displayed across the top of a webpage listing the most recently visited pages so the readercan quickly jump back to one. Since this function is providedby the web browser, breadcrumbs are a waste of space.A better use of the space is to display links to the page'slogical parent pages in the information hierarchy.2. Information output by statements insertedinto a program for debugging by printf.