<tag>
<name>when</name>
<tag-class>org.apache.taglibs.standard.tag.common.core.WhenTag</tag-class>
<tag-class>org.apache.taglibs.standard.tag.common.xml.WhenTag</tag-class>
<body-content>JSP</body-content>
<description>
Subtag of <choose> that includes its body if its