To set a breakpoint, double click on the line you want. For example, if you double click to set breakpoint on line i = 27, you get:
The red dot shows that a breakpoint has been set there.
The following information is displayed in the breakpoint panel at the bottom on the left:
You can delete the breakpoint by double-clicking on the line again or by using the context menu. You can also disable a breakpoint using the context menu. Disabled breakpoints look like this:
