Breakpoint

1. A point in a computer program where execution may be halted. A breakpoint is usually at the beginning of an instruction where halts, caused by external intervention, are convenient for resuming execution.
2. An instruction in a program for halting execution. Breakpoints are usually established at positions in a program where halts, caused by external intervention, are convenient for restarting.
3. A place in a program, specified by a command or a condition, where the system halts execution and gives control to the workstation user or to a specified program.