han-header-i($max = 1, $min = 6)
  $ret = ""
  for $i in ($max)..($min)
    if $i != $min
      $ret = $ret + "h" + $i + ", "
    else
      $ret = $ret + "h" + $i
  $ret
han-text-emphasis($posi = under, $mark = circle, $shape = filled, $color = inherit, $skip = true, $extend = true)
  han-text-emphasis-internal($posi, $mark, $shape, $color)
  han-text-emphasis-pf($posi, $mark, $shape, $color, $skip, $extend)

han-section-counter($toc = false)
  &
    @extend $han-section-counter
  if $toc
    ol.toc
      @extend $han-toc-counter