TapocoL Developing Tomorrow

So, I accidentally closed a tab in firefox. I was just going to open a new tab, then use the history menu to get the current page back. However, as I was trying to open a new tab using Ctrl+T, I accidentally hit Ctrl+Shift+T. To my surprise, the latter command undoes a tab close. So it re-opened the tab that I had accidentally closed in the first place. Another very useful command in Firefox. Here are several other useful keyboard shortcuts:

The Firefox Project is going for a record that anyone can be apart of. Firefox's Marketing Team are attempting to set a Guiness World Record for most software downloads in a 24-hour period. Check it out.