I create another definition that extends it.
<definition name="intake.assignment.summary" extends="createdby.layoutIa">
<put name="title" value="Intake Assignment Summary"/>
<put name="body" value="/WEB-INF/intake/intake_assignmentsummary.jsp"/>
<put name="displayheader" value="false"/>
It works but the page createdby_layoutIa.jsp has a small blue question mark by it in the project explorer.
Does anyone know what this question mark means?