<li><strong>keys</strong> are
<em><:= $showkeys ? 'always shown' : 'hidden if unassigned' :></em><:=
!defined $showkeys && ' by default' :>
<li><strong>keys</strong> are
<em><:= $showkeys ? 'always shown' : 'hidden if unassigned' :></em><:=
!defined $showkeys && ' by default' :>