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|#index_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.