exporting bookmark.html file
In Firefox 5 on exporting HTML files, two unnecessary elements are included for each web page entry; namely,
Opaite Mbohovái (1)
you did not finish you sentence.
The exported file contains additional information relating to bookmarks that you do not see when viewing the file, including the links, but also the favicons in a bitmap and as a link, and and some timestamp information, the purpose is to transfer bookmarks between two browsers.