It should be possible to hold down the control key and click on a custom JSP tab in order to jump to the source code for that custom tag.
Example:
In this JSP:
<%@ taglib uri=”/WEB-INF/struts-bean.tld” prefix=”bean” %>
<html>
<bean:write …..>
</html>
I click on:
<bean:write …..>
and jump to the source code for:
org.apache.struts.taglib.bean.WriteTag