While you are styling hair at the Guides sub-object level, right-clicking a viewport displays a quad menu that contains shortcuts to many styling controls that are also found on the Styling rollout.
The first two choices are shortcuts to the buttons in the Hair Groups group:
The other choices in this quadrant are shortcuts to the buttons in the Utilities group:
The choices in this quadrant are shortcuts to most of the controls in the Styling group:
To exit Cut mode and return to the hair brush, choose one of the other styling modes in this quadrant.