This option determines whether the spectrum bar shows peaks, and in what style, as follows:
|Off||Don't show peaks.|
|Lines||Show peaks as lines.|
|Dots||Show peaks as dots.|
The "Lines" style is more compatible with the "Area" and "Outlined Area" plot styles. If the plot style is "Line", it's recommended to show peaks as dots to avoid confusion. Peak persistence is configurable via the peak hold and peak decay settings.