How the heading section is chosen

Note: In this description:
The heading section is chosen from among the HTML pages, based upon their starting positions, and the sequence in which they were created:
  1. The pages which have a starting position closest to the first row of the screen are selected.
  2. If more than one page remains in the selection process, the starting position of the remaining pages is compared again. This time, the pages which have a starting position closest to the first column of the screen are selected.
  3. Finally, if more than one page remains, the earliest page generated is selected.
The heading section from the remaining selected page is used in the HTML page that is sent to the Web client.