Universal Edit Button
... that the Universal Edit Button is a Firefox add on supported by many websites that informs users when the web page they are viewing contains editable content?
... that the <b id="mwDos"><a class="mw-redirect" href="./Universal_edit_button" id="mwDow" rel="mw:WikiLink" title="Universal edit button">Universal Edit Button</a></b> is a <a href="./Firefox" id="mwDo0" rel="mw:WikiLink" title="Firefox">Firefox</a> <a href="./Add-on_(Mozilla)" id="mwDo4" rel="mw:WikiLink" title="Add-on (Mozilla)">add on</a> supported by many websites that informs users when the web page they are viewing contains editable content?