What is the use of Selection Mode in TraceTimelineEditor?

The Selection Mode is used to set the cursor for reference in the function bars to let you compute the difference between the clock cycles taken by an instruction.

To mark a point in the bar:

1. Click Selection Mode in the TraceTimelineEditor .
2. Click on the bar where you want to mark the point.

   A yellow vertical line appears displaying the number of cycles at that point.

3. Right-click on another point in the bar.

A red vertical line appears displaying the number of cycles at that point along with the difference of cycles between two marked points.