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Auto arrange tabs initial.rev36.1-signed No Restart
by Alex Henry
When a tab is activated, moves it automatically to the right (or left) of all other tabs in the window.
This tries to mimic a heap-like behavior in the hope of diminishing tab management.
About this Add-on
To activate this alternate behavior just go to the Add-ons Manager from the Firefox menu and once there hit the Preferences button for Auto arrange tabs and then check the box Invert behavior. No restart necessary!