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Auto Close Folder In Library 1.0.1-signed.1-signed Requires Restart
Open bookmark and history folders in Library and Edit This Bookmark will automaticly close themself when opening another one.
This add-on has been marked as experimental by its developers
This add-on is not compatible with your version of Firefox because of the following:
About this Add-on
It works by clicking on the folder name itself.
If you click twisty, you can open/close as default behavior
You can set enable or disable with an option.