If those two vertical yellow lines reminds you of the pause symbol, then their job has been accomplished. The pause symbol has widely been used in debuggers to denote the break functionality of the debugger. That symbol is the visual clue provided to the developer to convey the ability to stop or pause ones place in a program, most often for purposes of debugging code. That mark of two vertical lines (pause) we all recognize as having something to do with a breakpoint and further the direct result of interaction with that mark will be in essence to brake our code (certainly NOT to actually break it!).
Brakecode.com serves to be the home for software development tooling and support systems that currently include NiM (Node.js inspector Manager) and that provide even greater functionality to said tool. Managing Node.js Diagnostic Reports is a perfect example of that greater functionality.