The Chords ruler in Pro Tools allows you to perform which of the following actions?

The Chords ruler in Pro Tools is specifically designed for adding chord symbols to your session. This feature is particularly useful for composers and musicians who want to notate music in the software visually. By using the Chords ruler, users can create, modify, and manage chord symbols that represent the harmonic structure of their music, assisting in the overall arrangement and guiding musicians during performance.

The other options focus on different functionalities within Pro Tools. For instance, tempo changes pertain to how the session tracks align with the overall timing, while recording audio clips and editing MIDI notes are actions that involve creating and manipulating sound or MIDI data rather than symbolizing harmonic content. The Chords ruler distinctly caters to the representation of chords in a visual format, making it an essential tool for musical notation within the Pro Tools environment.