Editable HTML Content
http://www.hyperwrite.com/Articles/contenteditable.aspx

HyperWrite
2005

Abstract:

One of the little known features of DHTML, at least within Internet Explorer 5.5 or above, is an attribute known as contentEditable. This attribute can be used to make areas of text within a Web page editable by the user. This is very different from a form element, such as a text box, as contentEditable can make a table cell, or a standard paragraph editable.