$newline never
$if not (null activeCategories)
  <div .recipient-categories>
    $forall category <- activeCategories
      <div .recipient-category>
        <input type=checkbox id=#{checkedIdent category} .recipient-category__checkbox :elem category checkedCategories:checked>
        <label .recipient-category__label for=#{checkedIdent category}>
          $case category
            $of RecipientCustom
              _{MsgRecipientCustom}
            $of RecipientGroup RGCourseParticipants
              _{MsgRGCourseParticipants}
            $of RecipientGroup RGCourseLecturers
              _{MsgRGCourseLecturers}
            $of RecipientGroup RGCourseCorrectors
              _{MsgRGCourseCorrectors}
            $of RecipientGroup RGCourseTutors
              _{MsgRGCourseTutors}
            $of RecipientGroup (RGTutorialParticipants tutid)
              ^{rgTutorialParticipantsCaption tutid}
            $of RecipientGroup RGCourseUnacceptedApplicants
              _{MsgRGCourseUnacceptedApplicants}
            $of RecipientGroup (RGExamRegistered eid)
              ^{rgExamRegisteredCaption eid}
            $of RecipientGroup (RGSheetSubmittor sid)
              ^{rgSheetSubmittorCaption sid}

        $if hasContent category
          <fieldset .recipient-category__fieldset uw-interactive-fieldset .interactive-fieldset__target data-conditional-input=#{checkedIdent category}>
            $if not (null (categoryIndices category))
              <div .recipient-category__checked-counter>
              <div .recipient-category__toggle-all>
                <input type=checkbox id=#{checkedIdent category}-toggle-all>
                <label for=#{checkedIdent category}-toggle-all .recipient-category__option-label>_{MsgRecipientToggleAll}
              <div .recipient-category__options>
                $forall optIx <- categoryIndices category
                  ^{cellWdgts ! optIx}

            $maybe addWdgt <- addWdgts !? (1, (BoundedPosition category, 0))
              ^{addWdgt}