Setting the upper y-axis limit

The controls shown above are used to set the upper y-axis limit.

If auto-scale upper y-limit  is toggled, the maximum x-value of any of the curves in the plot will be used as maximum value. The edit window  shows the current value. It is possible to type a new value, but remember to validate it by pressing Enter.

The controls  are used for moving the upper limit either up or down.