Two new marker types, auto-search markers and offset markers, are now available. Auto-search markers automatically search for a user-specified feature such as trace maximum, and shift along the x-axis to stay aligned with the feature as the trace is updated due to tuning or optimization, or other. Offset markers maintain a specified x or y offset from another marker on the trace. In addition, rich-text notes can now be attached to markers. Markers before V13 would stay at the same x-axis value as where they were placed while the simulation results changed.
A simple example below show the min and max markers with some rich text added. After tuning and changing the frequency range, notice the new location of the markers.
To learn more about this feature, use the resource below.