{{- $cats := .Page.Params.categories }}
{{- $symbols := dict "article" "🗞️" "presentation" "🎤" "podcast" "🎧" }}
{{- $icon := "" }}
{{- $title := "" }}
{{- range $cat := $cats }}
  {{- with index $symbols $cat }}
    {{- $icon = . }}
    {{- $title = $cat | humanize }}
  {{- end }}
{{- end }}
{{- with $icon }}
<span title="{{ $title }}">{{ $icon }}&nbsp;&nbsp;</span>
{{- end -}}