At the top are three radio buttons, labeled "Set first end cell size", "Set last end cell size", and "Set interior cell size at s/stot =". The last button is followed by a text box containing the value 0.5. In this example figure, the first button is selected.

Next is the instruction "Enter cell size:", followed by a text box to its right containing the value 0.0001, and the word "or". On the next line is a check box labeled "Check to pick size graphically".

At the bottom are two radio buttons, labeled "Cell sizes are fractional arc lengths" and "Cell sizes are absolute lengths", with the second button selected.