http server:
=h port
listen for http connections (r2 -qc=H /bin/ls)=h-
stop background webserver=h—
stop foreground webserver=h*
restart current webserver=h& port
start http server in background)=H port
launch browser and listen for http=H& port
launch browser and listen for http in background stop foreground webserver
=h- =h* =h& =H&