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|User since||March 16, 2011|
|Number of add-ons developed||0 add-ons|
|Average rating of developer's add-ons||Not yet rated|
Rated 4 out of 5 stars
I install and customize " Tab Utilities "
I drag a button to the toolbar.
Then I restart Firefox.
Customization becomes ineffective in " tab bar " and " tab contextmenu "