Consider "" asdf -- asdf --- asdf ----- asdf ------ "" All of these should render as a header (same for =s). http://daringfireball.net/projects/markdown/syntax#header Cl-markdown renders them as "" <p>asdf -- </p><p>asdf </p><hr/><p>asdf </p><hr/><h2>asdf </h2> "" while the perl script renders them as "" <h2>asdf</h2> <h2>asdf</h2> <h2>asdf</h2> <h2>asdf</h2> "" It appears that cl-markdown only recognizes headers if there are 6 or more -/=s. Later, Daniel