Multi-tagging is a technique used by the DOM browser extension to identify a web page UI object. Whenever possible, DOM extension inserts more than one tag into the object identifier in following format:

Browser.BrowserChild(page_title).html_class(caption_tag|window_tag)

1. Caption_tag is the caption of the HTML element.

2. #index_tag is the index of this HTML element, counting from the beginning of this page of the same class of HTML elements.

3. window_tag is the window identifier.