Markers can be added to the main and thumbnail plots by right clicking on the plot window and selecting "Add/Edit Markers". An editor will appear that offers menu options to add new, duplicate, or delete a marker. For the main plot, markers are associated with a system and a state (or all states – as shown in Figure 25). For the thumbnail, markers are associated with individual predefined plot types (or all plots).
Markers can be applied to the plots iteratively by clicking on the Apply button or by clicking the OK button to apply the marker and close the editor. Markers can be used to delineate key times of the year, flow thresholds, or any other aspect of the plot window that might be of importance. Markers consist of lines, shading, and labels, all of which are controlled through the Add/Edit Markers editor. In Figure 25, the main plot shows three separate markers (Max Hydropower, Max Channel Capacity, and Peak Hurricane Season).
Figure 25. Marker editor and use.