All that is required is a cnee replacement that can print out systemwide keyboard events reliably, as the Firefox extension and Perl code are cross-platform.
只需要使用其他软件包替代cnee来可靠地输出系统的键盘事件，因为Firefox扩展和Perl代码是跨平台的。
Create a Firefox keyboard reporting extension.
创建一个Firefox键盘报告扩展。
For those who have internalized the Ctrl + J keyboard shortcut for the Chrome Downloads TAB, the Downloads extension is unnecessary.
对那些使用内建的Ctrl + J快捷键进入下载窗口的人来说Download extension是没用了。
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