I'm trying to get one single search button/box/form/whatever to search the whole of a) the posts and pages on my site, which the default search function does and b) wpforo posts and replies, which the wpforo search facility does. I have installed Relevanssi, whose docs tell me that I need to make it search the relevant custom post type, and tells me how to do so. (Or so I believe.) My question therefore is this: just what are the custom post types used by wpforo? Or (preferably) is there a way I can reasonably easily see the custom post types presently in use?

Thanks in advance!