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Firefox 9, how to switch the print preview size from letter to A4, and change all of the default "letter" paper sizes to "A4"?

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Please write what type of operating system you use.

If you use Ubuntu Linux you can change the file /etc/papersize from




by running Terminal from the menu and typing sudo gedit /etc/papersize

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Can't believe I forgot to add the operating system... it's Windows 7 – Timo Huovinen Feb 3 '12 at 10:58

I believe this forum post addresses your FF print preview question well:

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