On an operating system with a GUI (graphical user interface), a document window is a portion of the screen used to show the contents of a document file.
Options for page display Display top and bottom margins of the page, including header and footer content, in the Print Layout view Choose this option to display the white space between pages. Show highlighter markings Choose this option to show underlined text in printed documents and on the screen.
The cat command can also be used to show the contents of single or multiple files on your screen. You can read a file's contents one full screen at a time by using the cat command along with the pg command. Using input and output redirection, it is also possible to view the contents of files.
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