In this previous post I described how to easily enter special characters or strings of text using the Preferences dialog found under Tools > Preferences.
Google has made a minor change to help you undo these autocorrections when you trigger them inadvertently. Now, pressing the backspace key immediately after any autocorrection will undo it, leaving instead the ‘trigger’ string in its plain-text form.
For example, if you type (r) and the autocorrect system instead enters the symbol ®, you can press backspace to force it to revert back to (r).
The backspace key also now cancels automatically launched bulleted list and numbered list modes, as described in this previous post.