A pen is a writing instrument used to apply ink to a surface, usually paper, for writing or drawing.
Historically, reed pens, quill pens, and dip pens were used, with a nib dipped in ink.
Ruling pens allow precise adjustment of line width, and still find a few specialized uses, but technical pens such as the more commonly used.
Modern types include ballpoint, rollerball, fountain and felt or ceramic tip pens.
A pen is important things for all man.
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