if {[info exists ocean]} { lappend cmd --ocean $ocean }
if {[info exists pirate]} { lappend cmd --pirate $pirate }
manyset [split [eval exec $cmd] " "] ocean pirate
if {[info exists ocean]} { lappend cmd --ocean $ocean }
if {[info exists pirate]} { lappend cmd --pirate $pirate }
manyset [split [eval exec $cmd] " "] ocean pirate