A breakpoint is a signal that tells the debugger to pause the program. A breakpoint displays as a red dot beside the corresponding code line.

Breakpoints are processed as private to each user. They are linked to a source code line, not to a line number; altering a source file does not affect the breakpoint's relative position in functions. Breakpoints are stored when the Debugger is stopped, and set when the Debugger is started. Previously-set breakpoints are available each time the Debugger is run.