A notebook is a book of blank, lined or graph paper on which notes may be written. Students often carry individual notebooks in order to take notes for different courses they may be taking in school. One very famous notebook is called Moleskine.

Also used by journalists, sometimes taking their notes in shorthand.

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A notebook or laptop is also a mobile computer.

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Notebook is a personal Wiki. Notebook runs on GNU/Linux, Mac OS X, Windows, and any other platform with TCL/TK support.