select subforums to search

[Suran]

It would be great to allow searching only in selected sub-forums instead of searching all forums and
manually going through thousands of results, eyeball-grebbing the forum-names to e.g. see if a
given topic has already been mentions in a given subforum.

[Nocte]

In the advanced search, there's an option at the bottom "Choose a board to search in". If you open it, there's a list with checkboxes.