Comments Plus: specify theme's webhooks

I've got everything configured for Comments Plus and yet nothing is showing. I figure the problem is the theme, and the section of the configuration that says "here you can specify the hooks your theme does use". But I don't know what I'm aiming for here. What is an example? Is this something like a CSS class that I can see in the source code of the page? Do I need to look at the PHP file for the theme? What is an example of what I'm looking for? Thanks!