sorry if I was too brief
I try to explain with a short example:
there are 3 tags (or categories): t1, t2, t3 and 3 posts post1 (t1,t2); post2 (t1,t3), post3(t3)
in wp show is possible to point more choices (example t1,t3) but in viewing all posts will be visible not only post2 that is t1 and t3 (type boolean logic).
In any case your plugin is very useful and I recommend it.
So you want it so any posts that have the t1 tag are displayed, even if they have other tags? Isn’t that how it works by default? Or do you want it so the post will only show if it only has t1 and not the others?
Sorry for not understanding right away – we’ll get there! 🙂