Help! Why I got an extra contr="false" for element person?

[Yuan Yuan]

I used dom.Writer and personal.xml from the Xerces sample.

but I got an extra contr="false" for element "person" from the output.

The original xml file is:

<person id="four.worker">
    <name><family>Worker</family> <given>Four</given></name>
    <email>[EMAIL PROTECTED]</email>
    <link manager="Big.Boss"/>
  </person>


but I got:

<person contr="false" id="four.worker">
  <name><family>Worker</family> <given>Four</given></name>
  <email>[EMAIL PROTECTED]</email>
  <link manager="Big.Boss"></link>
</person>

Could please somebody tell me where is this contr="false" attribute come
from?

Thanks a lot!

Yuan Yuan