swapping or will not work at all.

</para>

<para>

In its default configuration <productname>FOP</productname> will emit an

<literal>INFO</literal> message for each page. The log level can be

changed via <filename>~/.foprc</filename>:

<programlisting>

LOGCHOICE=-Dorg.apache.commons.logging.Log=org.apache.commons.logging.impl.SimpleLog

LOGLEVEL=-Dorg.apache.commons.logging.simplelog.defaultlog=WARN

</programlisting>

</para>

<para>

Other XSL-FO processors can also be used manually, but the automated build

process only supports FOP.