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The latest version of Firefox will not allow me to use the 'pinch' feature on my MacBook Pro to enlarge and decrease the size of the text on selected pages in on the web.

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wsrichrich
wsrichrich
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The new version of Firefox will not allow me to use the 'pinch' feature to enlarge and decrease the print or pictures that I view on web pages.

The new version of Firefox will not allow me to use the 'pinch' feature to enlarge and decrease the print or pictures that I view on web pages.

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cor-el
cor-el
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Some gestures have been removed in Firefox 4.

You can restore the zoom feature by changing the values of the related prefs on the about:config page. 

browser.gesture.pinch.in -> cmd_fullZoomReduce
browser.gesture.pinch.in.shift -> cmd_fullZoomReset
browser.gesture.pinch.out -> cmd_fullZoomEnlarge
browser.gesture.pinch.out.shift -> cmd_fullZoomReset
browser.gesture.pinch.latched -> false

To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website.
If you see a warning then you can confirm that you want to access that page.
You can use the Filter bar at to top of the about:config page to locate a pref more easily.