The shape of the Activities button represents your workspaces, the grouping of windows on your desktop. For example, below is the shape of the Activities button if you have 3 workspaces and the second workspace is the one that it displayed right now.

<p>The <b><i>Files</i></b> browser allows you to browse and organize your
files, create folders, and [[connect to SSH or SFTP
servers|desktop#files]].</p>

<p>Night Light is unavailable when running Tails in a [[virtual
machine|doc/advanced_topics/virtualization]].</p>

To learn about all keyboard shortcuts in GNOME visit [GNOME Help: Useful keyboard shortcuts](https://help.gnome.org/gnome-help/shell-keyboard-shortcuts.html) or use the *Settings* utility in Tails:

In the *Settings* utility, choose **Keyboard&nbsp;▸ Keyboard Shortcuts&nbsp;▸ View and Customize Shortcuts**.