Select the security for embedded objects on a page (e.g. frames,
scripts). Any fetches any required object.
Non-decreasing will fetch a required object if its security
(https:// vs. non-https:// in the URL) is not less than
the main page, i.e. an https:// object on an http:// page
will be fetched, but not vice-versa. Non-increasing is the
opposite. Same protocol requires that the protocol of the
object be the same as the main page.