A theme is the colour and the style of the main page, you can
personalize your web portal adding banner, or what you want to put in
the html page.
Only there three things that are obligatory, the statictics image or
link, the file list image or link and the search text and button.
The link for the statitistics is the 's'. Example:
<A HREF=s>Text or Image</A>
For file list the same, but with the letter l.
<A HREF=l>Text or Image</A>
The search button and text field is quite different. Example:
NAME=serc> The name
must be 4 letter name.
<INPUT TYPE=submit value=Search> The
buton must be a submit type.