Firefox 4 has two features for visualizing tabs: the little button at the right end of the tab bar with the tooltip "List all tabs", and the "Group your tabs" button, which brings up the panorama thingy for putting tabs in groups. Does either of these have a keyboard shortcut?
Firefox – Does Firefox 4 have keyboard shortcuts for the “Group your tabs” and “List all tabs” buttons
browser-tabsfirefoxkeyboard shortcuts
Best Answer
There is an article about keyboard shortcuts in Firefox Help: http://support.mozilla.com/en-US/kb/Keyboard%20shortcuts#w_windows-tabs
It mentions that the shortcut for the Tab Groups View is Ctrl + Shift + E.