Editing : Editing Basics : Audio Clips and Waveforms : Outlined Waveforms

Outlined Waveforms
Outlined waveforms provide more visual definition of the waveform, especially when viewed from a distance. However, you may want to disable Outlines when you need to do precise, detailed editing in Peak waveform view. Outlines are not displayed when you are zoomed in to the sample level.
To show (or hide) waveform outlines:
*
Select (or deselect) View > Waveforms > Outlines.