This boolean property, if true, indicates that the entry should wrap at the right edge of the frame. The dotted lines that make up the Windows and O"/2 style outlines are not automatically extended for multi-line entries, so you should change your images to something more appropriate.
Multi-line entries are created by placing the entry inside a table and allowing the browser to handle the wrapping. Some older browsers reset the font attributes to the page defaults inside a table, ignoring the FONT tags you set up around the outline. If your site needs to work on non-CSS browsers (which can include Netcape 4 with CSS turned off in the preferences) you should specify appropriate default attributes for menu.htm using the <BASEFONT> tag.