+
+ <para>
+ The <literal>format</literal> is generic but can only be used to
+ specify XML indentation when the value <replaceable>v</replaceable>
+ is 1 (<literal>format=1</literal>).
+ </para>
+ <para>
+ The <literal>base64</literal> allows a full record to be extracted
+ from base64-encoded string in an XML document.
+ </para>