Slide 1
Open up your browser's javascript console.
Slide 2
See how things pop up in the log window when you change slides?
Slide 3
It does that for all the default events....
Slide 4
...as well as for custom events, like this button representing a bespoke.js plugin.
Slide 5
That's it, really. I was bored, and wanted to create a bespoke.js plugin. Enjoy!