If you do not own a page, then you may be restricted from modifying its internal properties, from editing its contents or even from viewing it at all, subject to the owner's desires. The WebWeb administrator always has access to all pages.
This will tell you who owns the page, when it was created and last edited, and its revision number (which indicates how much it has been edited in the past). If the page has any sort of access control in operation then this will be outlined.
If the page owner and web administrator have submitted their email addresses then you will also be given the chance to email them.