</p>

<p>
Several backslash escapes allow arbitrary values to be encoded as
ASCII text.  There are four ways to represent the integer value
as a numeric constant: <code>\x</code> followed by exactly two hexadecimal
digits; <code>\u</code> followed by exactly four hexadecimal digits;
<code>\U</code> followed by exactly eight hexadecimal digits, and a
plain backslash <code>\</code> followed by exactly three octal digits.

        <match value="allow:" type="stringignorecase" offset="0"/>
        <match value="disallow:" type="stringignorecase" offset="0"/>
        <match value="sitemap:" type="stringignorecase" offset="0"/>
        <match value="\nuser-agent:" type="stringignorecase" offset="0:1000"/>
        <match value="\nallow:" type="stringignorecase" offset="0:1000"/>