A breakpoint is a point in your source code which will cause the debugger to stop executing your program when it runs your program. If you set a breakpoint on line 10 of your code, the debugger will execute all lines up to line 10 when you click the Run button. Line 10 will not be run until you take another action like using one of the Next, Step or Continue buttons.
A breakpoint is visually identified in the source code window by using a different color for the first character of the line with a breakpoint. Ebe uses a bright red background with yellow letters for easy identification of lines with breakpoints.
You set or clear a breakpoint using a right click in the source window. Place the cursor somewhere on the desired line and right click. The first click with set the breakpoint and the second will clear it. You may also click with either the left or right mouse button in the line numbers column to the left of the source code to toggle a breakpoint on a line.