Query: What is the use of "Add breaker" operation?

Operation performed:
I right clicked on a trace and clicked on the operation "Add Breaker". As a result, a new entry is added in the Trace window with function=BREAK

Query: What is the use of this operation?
Does it allow the user to debug an Erlang process by setting breakpoint, so that the process stops when the breakpoint is hit. Does it allow user to inspect the variables, once breakpoint is hit. Please clarify.