ports/sysutils/open/files/pkg-message.in

[
{ type: install
  message: <<EOM
To use open it must be installed setuid root
(type "chmod u+s %%PREFIX%%/bin/open")

or

all the VT devices that are not allocated
to getty should be read/write by all, e.g.

chmod a=rw /dev/ttyv[9abc]
EOM
}
]