https://access.stage.redhat.com/documentation/en/red-hat-jboss-enterprise-application-platform/version-7.0/management-cli-guide/#ref_mgmt_cli_startup_args

We should add a note to ' --gui' switch that it is not a supported way of interacting the JBoss CLI.

According to https://access.redhat.com/node/182373
"The '--gui' option is not the recommended way of interacting the JBoss CLI but it is helpful in building commands and viewing the configuration of the connected JBoss instance."

See also comments for JBEAP-4541