Mark Capture Events to Show Statistics
Markers are allowed only in inactive capture displays. All inactive capture displays contain at least two markers: Begin and End. Single-clicking places the cursor in a capture display. Double-clicking places markers in a capture display and removes placed markers. Markers are labeled M0, M1, M2, and so on, as they are created.
After you have placed your markers, you can use the From and To controls in the Markers & Statistics group box to examine statistics about the captured data.
If you are using summarized display mode, you might have more than one marker for each line. In this case, the letter M appears in the marker column. You can click the M several times to see each marker for that line.