What is the optimal IDE/text editor print margin when programming? [closed]

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Considering today's monitors and programming fonts that look quite good at small point sizes, what is the optimal print margin to set in your IDE/text editor?

I have been using the age-old 80 characters for most of my career but Code Complete has made me consider a 90 character margin.

Is 100 going too far or is it really up to the developer/team involved?

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Even if you have a very large screen, reading long lines is more difficult than reading short lines.

Besides, the extra space can be used to show other informations. I work in a team that uses very long lines (120 characters) which is fine when the text editor is in full-screen mode, but the text is often truncated when other panels are open.