How to expand a portion of the document in the browser, device, and program

摘要

A web browser magnifies the content of the whole page in memory and displays the relevant portion in a magnifier with hyperlinks. The web browser then maps the magnified display to the original document. Thus, manipulation of the mouse in the magnified display may result in an action with respect to the original document. The user may then select a link for navigation within the magnified display. Alternatively, the web browser may analyze the original web page and construct magnifier contents on the basis of either the document object model, extensible markup language (XML), or hypertext markup language (HTML) representation of the magnified portion.