JTAG allows accessing internal memory and registers, setting breakpoints on code, and single-stepping execution to observe system behaviour.

The debugger allows setting breakpoints (which allow execution to be stopped temporarily at a certain position) and watches (which monitor the values of variables as the execution progresses).

The code handler also has functionality to support debugging functions, such as setting breakpoints, viewing or writing memory, or pausing a program in progress.

Debuggers are software tools which enable the programmer to monitor the execution of a program, stop it, restart it, set breakpoints, and change values in memory.

A user can set breakpoints and watches, alter scripts on-the-fly, execute statements in the current environment from a console, and audit page resources and local storage.

By the early 1990s, RoboWar included an integrated debugger that permitted stepping through code and setting breakpoints.

Furthermore you can set breakpoints in your source either at design time or at run time.

Single-line chained statements may be more difficult to debug as debuggers may not be able to set breakpoints within the chain.

Once the program is stopped in the main function, the user is free to set breakpoints, inspect variables, single step, resume the execution of the inferior, etc.

Its user interface allows the user to set breakpoints and/or step through execution of script code line by line, and examine values of variables and properties after any step.