アドオン
Keep in Taskbar 2.0 要再起動
作者: Firefox user 14e89b
A simple plugin that makes the Close button behave exactly like the Minimize one.
このアドオンについて
This addon makes the Close button behave like the Minimize button, so when the Close button is clicked, the application just minimizes to the taskbar instead. Other means of closing still work as intended.
