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About this Add-on
Toolbar button serves as an ON|OFF switch, once pressed, the icon will change accordingly (color and shape). Please note that if you want to unmute just one tab, simply right-click on a tab and then click on the "Unmute Tab" item.
Note 1: if you manually unmute a tab, the addon will NOT change it, even if you click on the toolbar icon.
Note 2: in order to report bugs, please fill the Bug report form in the addon's homepage.