If you need more space to edit your documents in Google Docs or if you want to read a document, there's now a full-screen mode that hides the menus and the toolbar. Just select View > Full-screen mode or type Ctrl-Shift-F to go into full-screen mode. Unfortunately, the same shortcut is also used by the Web Developer extension to display element information, but you can change it in the options.
Since you no longer have access to the menus, it's useful to know the keyboard shortcuts and to remember that Esc brings you back to the normal mode.
If you publish a document and you want to display it in fixed-with page view, just append &pageview=1 to the URL:
To hide the footer automatically added by Google, append &hgd=1 to the URL: