What is the difference between a 'Page' and a Hit (aka Page Element) category of metrics? It seems like my URLs can be listed under either one (or both at once). Are they not mutually exclusive? But they seem to be the same thing?
For every content item on a web site, there is a URL to identify that content element (whether it is a gif/html/asp/etc). Any time FxM sees the individual content element requested, it makes sure there is an entry in the Page Element (Hit) list for that content. Downloads of Page Elements may or may not be caused by user actions. So every URL in the site can be found in/have an entry in the Page Element list (unless you have added an Exclude hint).
Next, there is FxM's concept of a Page download. Pages are user driven events that cause one or more content elements to be downloaded. Pages are identified by the main URL in the set of content elements that are downloaded. *IF* the user action only causes a single element to be downloaded, then the performance metrics you see for a Page will equal the performance metrics for the Page Element. More commonly though, a Page consists of more than one URL. So the Page resource list will only include URL's that FxM considers "clicked on by a user" that started a download of one or more content elements.
So, a URL *may* also show up in the Page category. But it will definitely always be in the Page Element category. The URL that identifies a Page and is in the Page list also happens to show up in the Page Element list. But that does not mean a Page is a Page Element.
The term 'Page Element' was changed to be 'Hit' several releases ago. They mean the same thing.