Through trial and error I figured out how to do something but I'm curious as to WHY it worked. I have a page query in which I've excluded 2 pages. I wanted to exclude the children of one of those pages as well but nothing worked until I added
'post_parent' => 0. It works perfectly but I'd like to know why (in case it's the wrong way to go about it) and I can't find anything that explains. Anyone?
NOTE: After a bit more playing it appears it excludes any page that is a child?