Loading the Evaluation Graph Shelf

In Maya 2016, in the 'Bonus Tools', there's a special shelf_EM.mel that you can load. This will provide a bunch of custom tools to helping to debug the EG.
Few gotchas:

• After you load the shelf, you'll need to quit Maya, and rename the one from the bonus tools dir you loaded it from, so that the shelf in your prefs that the shelf in the bonus tools dir don't conflict.
• To use the tools in the shelf, you first need to (every time you start Maya) execute:

source em_commands.mel

In Maya 2017 this is replaced with a new Profiling window, but there appears to be functionality in the shelf that's missing in the window.