WYSIWYG:

An acronym for "What You See Is What You Get".  A WYSIWYG program is one that allows you to create and edit a web page, text, or graphical user interface so that you can see what the end result will look like while the webpage document is being created.  WYSIWYG web page editors conceal the markup language (HTML) so as to allow the user to think entirely in terms of how the page should appear.  Microsoft FrontPage and Adobe PageMill are two common WYSIWYG editors.