The server have a command interface that can be used to run task not related to data or pages. It also holds none standard ways of accessing dqls from other places than the WebServer table.

about return server setting about app and config
run a dql from any table as described in this document
openapp open the application served now in DataEase client
ping returns result: "ok"
quit stop server
rescan re scan the page definitions from the WebServer table

All commands have the form /cmd/thecommand/...