markItUp! is not meant to be a â€œFull-Features-Out-of-the-Boxâ€-editor. Instead it is a very lightweight, customizable and flexible engine made to meet the developer’s needs in their CMSes, blogs, forums or websites.
Note! markItUp! is not a WYSIWYG editor, and it never will be.
Visit Jay Salvat for more information, examples and to download the source.