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Sidebar Auto Show/Hide 0.10.1-signed.1-signed Requires Restart
Automatically shows the sidebar when the mouse cursor touches the left window border, and closes it when the cursor is over the web page.
About this Add-on
I've had several requests to make the sidebar float. I found an extension that makes the sidebar float and seems to work with this one: https://addons.mozilla.org/en-US/firefox/addon/sidebar-popup-panel/ Just click the float icon after you install it. Thanks to White Alice0775.