The size of the printer paper used varies according to the type of document you are printing. Typical sizes include A4 for general correspondence, Letter for North America, and Legal for contracts or forms. When printing, most printers give you the option to choose the size of the paper that you want to use. Often, paper size is set in the printer configuration and is the same as the paper you put in the tray, so when printing, there is less chance of a printing mistake.
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