The templates available in the html subdirectory of BookmarkProvider and their description are:
Contains JavaScript code for the Bookmark provider to open new windows with the URLs typed in and do the correct URL http:// prepending. Also contains a small bit of formatting for the URL entry box.
Contains the formatting for the Edit page for the Bookmark provider.
Used by the edit page of Bookmark Provider to draw the part where the bookmarks are removed.
Contains the markup for the radio buttons used to select the window option.
Contains markup for each URL shown in display.template.