What should you do first after installation(see INSTALL for detail).

An easy way of Using XpSQL for first step is bulkloading xml document 
and query with XPath.

(1) bulkloading
===============

$cat ../test/test01.xml
----------------------------------------------
<para>
   This is a <ital>very</ital> little bit of
   XML.
</para>
----------------------------------------------

$cd pgxload
$./pgxload -help
usage: pgxload [-u user] [-p password] [-d dbname] [-h host] [-o port]
        [-f file_encoding] [-t db_encoding] [-s] [-?] [file]

$./pgxload -u postgres -p passwd -d xpsql -f "UTF-8" -t "EUC-JP" -s ../test/test01.xml

read:68 buffer:1048576 done:true
[pgxload]finished

(2) query with XPath
====================

$psql xpsql

-- show matched node ids
xpsql=# select * from xpath_eval('/para/ital');
 docid |  id
-------+-------
     2 | 52151
(1 row)

-- retrieve with xml
xpsql=# select toXML(id) from xpath_eval('/para/ital');
                           toxml
------------------------------------------------------------
 <?xml version="1.0" encoding="EUC-JP"?>
<ital>very</ital>
(1 row)
