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3 Hidden Features In Firefox 15 You May Want To Enable

Firefox 15, which has been released a few days ago, comes with some cool features disabled by default: native PDF viewer, preferences in tab and click-to-play plugins. These features have been in testing for quite a while, but they are not 100% ready so they aren’t enabled by default and there are no options in the Firefox preferences to enable them. But, if you don’t mind an occasional glitch, you can enable them using the about:config tool.

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