In addition to different line styles, it is possible to add marked to graph lines. In Vensim PLE and PLE Plus these are simply toggled on and off, while in the other configuration they can be customized.
Marker are characters that are displayed along a graph line. The defaults are numbers (and letters), but symbols can also be used.
Ø | Select the graph menu Options and select "Number lines" |
To change the line markings, click Tools->Options and select Graph
NOTE Changing settings on the Colors & Markings and Graphics tabs of the Global Options dialog will change the appearance of existing graphs both on the screen and when they are printed.