The audio curves can be used to set/edit the volume and balance level of an audio object or the audio components of a whole track. When activated, the curves are visible on the timeline. If the curves are removed from the display using the Right Click menu, the effects themselves still exist; so if you want to cancel the volume/balance changes you have made, follow the instructions for each type of curve below.
Right-click on the audio object and choose Volume Curve or Track Curves. Depending on what you chose, the Volume and Balance curves will appear as follows: