Fixing up typos

      These three types of variables are expanded in the order above.</p>

      <p>As already mentioned, all rewrite rules are

      applied to the <em>Substitution</em> (in the in which they are defined

      applied to the <em>Substitution</em> (in the order in which 

      they are defined

      in the config file). The URL is <strong>completely

      replaced</strong> by the <em>Substitution</em> and the

      rewriting process continues until all rules have been applied,

      or it is explicitly terminated by a

      <code><strong>L</strong></code> flag - see below.</p>

      <code><strong>L</strong></code> flag.</p>

      <p>There is a special substitution string named

      '<code>-</code>' which means: <strong>NO

        <li>'<strong><code>qsappend|QSA</code></strong>'

        (<strong>q</strong>uery <strong>s</strong>tring

        <strong>a</strong>ppend)<br />

        This flag forces the rewrit engine to append a query

        This flag forces the rewrite engine to append a query

        string part of the substitution string to the existing string,

        instead of replacing it. Use this when you want to add more

        data to the query string via a rewrite rule.</li>

	  translate ``<code>/~</code>'' into

          ``<code>/u/</code>'', or to always append a slash to

          <code>/u/</code><em>user</em>, etc.<br />

          <p><strong>Note:</strong> When you use this flag, make

          <strong>Note:</strong> When you use this flag, make

          sure that the substitution field is a valid URL! Otherwise,

          you will be redirecting to an invalid location. Remember

          that this flag on its own will only prepend

          <code>http://thishost[:thisport]/</code> to the URL, and rewriting

	  will continue. Usually, you will want to stop rewriting at this point,

	  and redirect immediately. To stop rewriting, you should add 

	  the 'L' flag.</p>

	  the 'L' flag.

        </li>

        <li>'<strong><code>skip|S</code></strong>=<em>num</em>'

          redirect to your own server will not work with the prefix

          <code>http://thishost</code> because of this feature. To

          achieve such a self-redirect, you have to use the

          <strong>R</strong>-flag (see below).</p>

          <strong>R</strong>-flag.</p>

</note>

<note><title>Note: Query String</title>

      query string. When you want to erase an existing query string,

      end the substitution string with just a question mark. To

      combine new and old query strings, use the

      <code>[QSA]</code> flag (see above).</p>

      <code>[QSA]</code> flag.</p>

</note>

     <p>Here are all possible substitution combinations and their