[juven14]

smarty code looks like this:

{something}

{$something}

{if $something} something {/if}

If you are afraid you'll miss something it might be better to move you template into layout.tpl.php.

The most important part is the metatags and {include file=$body}

These will allow your title, keywords, description to be generated as well as load the classifieds into the page. I believe the rest of the smarty code is for the links.