Firefox session restore

There is an option in firefox that offer to remember the tabs after closing the browser (not a sudden crash), anyone know how to enable it?

I thought it was enabled by default.

I never turned mine on , but it works.

It certainly is but i can’t find the option to enable back it on.

Here you go

http://support.mozilla.com/en-US/kb/Session+Restore?s=enable+restore+tabs&as=s