ExadelStudio appears to bypass the Eclipse file system (at least when validating the struts-config) so as to not find link resources.
I setup /StrutsHello/WebContent/pages/greeting.jsp to be a linked resource
This file is referenced in my struts-config like this
<forward name="sayHello" path="/pages/greeting.jsp"/>
ExadelStudio marks that with an error "Forward sayHello of Action /greeting path attribute reference to non-existent page"
This is incocorrect, this file is there, albeit a linked resource. When I run the webapp in Eclipse+Exadel, the page does work as it should - so WST or something must be using the EFS properly unlike the part of Exadel validating the struts-config.