UBB.threads PHP Forum Software Community Forums UBB.threads Version 7/8 Support dumb question: can't figure out "mark all read (in forum)"

I am trying to figure out how to mark a single forum as "all read". All of the doc says to "double-click" an icon, but (to me) appears to be vague as to which icon. And since when does one "double-click" anything on the web?

Anyway, I am running 7.2.1 (as of this morning!).

https://www.ubbcentral.com/forums/ubbthreads.php/ubb/cfrm <-- for this board..

now look at the left hand side.. you have images there.. the yellow ones mean 'unread'

just double click on the yellow image and *poof* marks THAT forum and it's sub-forums as read

Woah! Thanks!