$newline never
<div .radio-group>
  $forall opt <- universeF
    <div .radio>
      $with inputId <- mconcat [theId, "-", toPathPiece opt]
        <input id=#{inputId} *{attrs} type=radio name=#{name} value=#{toPathPiece opt} :isChecked opt val:checked>
        <label for=#{inputId}>_{opt}