This helps as well showing the build in spring tags available:


http://static.springsource.org/sprin...-form.tld.html

Following the tag namespace in the jspx created by roo

create.jspx has xmlns:field="urn:jsptagdir:/WEB-INF/tags/form/fields"

so field:select is coming from /tags/form/fields/select.tagx

In select.tagx xmlns:form="http://www.springframework.org/tags/form"

so <form:select is coming from the spring form tag library.

The above link is to the documentation for all the spring form tags.

Hope this helps.