tgra - 2006-09-20

Logged In: YES
user_id=1384614

one option would be to capture comments and pubmed id in
element attributes, e.g.

<trophic_level comments='comment'
pubmed_id='124567'>autotroph</trophic_level>

For the XML instances to validate against the XML schema,
there would be a requirement to add comments and pubmed_id
attributes to the XML schema. Would need to review
implications of this approach for generic application.