(('shell command) (serve-shell-command command dir-selector config))
(('eval expression) (serve-expression expression dir-selector config))
(('url display-string url)
(('shell command) (serve-shell-command command dir-selector config))
(('eval expression) (serve-expression expression dir-selector config))
(('url display-string url)
((type display-string selector host port)
(print type display-string "\t" selector "\t" host "\t" port "\r"))
((type display-string selector host)
((type display-string selector host port)
(print type display-string "\t" selector "\t" host "\t" port "\r"))
((type display-string selector host)