LaTeX.org

Hi all,

Is there any way one can place a decorative separator line in Latex (perhaps using TiKZ) similar to the ones one can see here: http://www.google.pt/search?um=1&hl=pt-PT&biw=1920&bih=979&tbm=isch&sa=1&q=decorative+line&oq=decorative+line&aq=f&aqi=&aql=&gs_sm=e&gs_upl ...

Good morning,

Does anyone know where can I find a list of all the regular expressions recognized by the LaTeX's lexer and the language's formal grammar?

Thank you very much.