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What happened to the Macintosh OS "pinch" feature allowing one to change the size of the images on the screen?

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Using MacBook Pro, OSX 10.6.7, there is a feature where one changes the size of the objects on display in the screen with a pinch or spread of two fingers. Firefox v4 does not seem to allow this. Can you bring the feature back, please?

Using MacBook Pro, OSX 10.6.7, there is a feature where one changes the size of the objects on display in the screen with a pinch or spread of two fingers. Firefox v4 does not seem to allow this. Can you bring the feature back, please?

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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.

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Thanks. Can these gestures be restored automatically in the next update?