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The "Save Tabs" feature is missing in FF4 and no fix in about:config

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FF3,x had the feature to save tabs when exiting FF. The New FF4 does not have that and I could not find a fix in about:config. That is a very valuable feature for me. Might have to return to FF3.x Please help! Thanks, Jack

FF3,x had the feature to save tabs when exiting FF. The New FF4 does not have that and I could not find a fix in about:config. That is a very valuable feature for me. Might have to return to FF3.x Please help! Thanks, Jack

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You can set the warn prefs on the about:config page to true via the right-click context menu or toggle with a double left-click.

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 Cor-el

I want FF4 to SAVE on close... I already get a warning to close tabs or cancel.. "Close Tabs" then loses all tabs upon next time I open FF. Will one of these warn AND save? I see nothing in about:config that specifies "save."

Thanks for your time, Jack