(
  "dump of %par",
  {
    "margin"            => 20,
    "margin-bottom"     => "defaults to margin-right",
    "margin-horizontal" => "defaults to margin",
    "margin-left"       => "defaults to margin-horizontal",
    "margin-right"      => 3,
  },
)
                        margin => 20
                 margin-bottom => 3
             margin-horizontal => 20
                   margin-left => 20
                  margin-right => 3
                    margin-top => not defined