searxng/searx/templates/simple/preferences/tokens.html

<fieldset>{{- '' -}}
  <legend id="pref_tokens">{{- _('Engine tokens') -}}</legend>{{- '' -}}
  <div class="value">{{- '' -}}
    <input name="tokens" aria-labelledby="pref_tokens" type="text"
           autocomplete="off" spellcheck="false" autocorrect="off"
           value='{{ preferences.tokens.get_value() }}'>{{- '' -}}
  </div>{{- '' -}}
  <div class="description">
    {{- _('Access tokens for private engines') -}}
  </div>{{- '' -}}
</fieldset>{{- '' -}}