Supported configurations should not be included in the documentation. It should instead link out to the relevant article or this page: https://access.redhat.com/support/configurations/jboss which lists all Jboss configs.

Please delete: https://access.redhat.com/documentation/en-us/red_hat_jboss_web_server/5.3/html-single/installation_guide/installing_jboss_web_server_on_red_hat_enterprise_linux#OS_Configs from the documentation.