Board Thread:Support Requests - Getting Technical/@comment-34585250-20200530011340/@comment-9605025-20200530070806

Instead of "titles", use "pageids". However, I don't see how you would know the page IDs without first retrieving them; so I think you might as well use titles.

As for information on what these all do, just look at the documentation. Go to api.php with no query string and read what it says.