: page? Up? Keyboard keys. Function: Page Up key; In a text editing environment, press this keyboard to page forward the document.
When you press the PageUp key to return to the beginning of the document, Word may stop responding (hang). At present, Microsoft has obtained patents for "PageUp" and "PageDown" buttons. The software giant applied in 2005 and was officially approved on August 19, 2008.
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American patent. No.7,465,438+05,666 is described as "a method and system for a document viewer to accurately scroll a document, such as scrolling a page, regardless of whether the document is enlarged or not and whether the viewer browses all or part of the page, and can directly switch to the next page." The "inventors" listed in the patent include TimothySellers, HeatherGrantham and JoshuaDersch.