How to display additional fileds I've added to a page - the way I want them? I've added some additional fields to the content type - Page. But now when the page is rendered it displays all of them as well - just lists them at the bottom of the content. But that's not what I want - I do not want them to display at all, I just want to use them elsewhere in PHP code. There should probably be a hook for this, but I still just can't get my head around the whole thing. Please?
Hiding additional fields is easy, just notice Display Fields tab at the Manage Fields page for the specified content type (page in this case). There you can easily exclude additional fields from being automatically appended to the $content.

In order to show fields the way you want them use themename_preprocess_page hook and check $vars['node'] object for the particular fields.