Make changes without re-deploying the war file in JBOSS EAP

Hi,
I am trying to find out is there a way to update a file without redeploying the war file again in JBOSS 6 EAP. In Tomcat, I can go to the TOMCAT_HOME/webapps/xyz_application and find a file (e.g. login.jsp or web.xml) and make changes. Depending on the changes, I may need to shutdown or restart the Tomcat. This has been a quick way to ensure the changes work. However, I could not find a way in JBOSS. (Eventually I will make the changes into the war file anyway in case we need to deploy on other JBOSS instances.) . Thanks.