We also consider the second-order DE 5. Note how derivatives are defined. You can put as many of these in as you like. Each condition produces a separate curve. Try adding some more.
NONE suppresses the slope field plot.
If you leave it out you get both the solution curves and the slope field. You can now redefine q and replot the curves. Choose the Petrie-lab printer if you are in the Jupiter lab. There are additional option in the DEplot command that may be useful.