app/views/shared/additional_info/_edit.html.erb
<div class="additional-info">
<div>
<h2><%= t 'additional_info.title' %></h2>
<span class="explanation">
(<%= t 'additional_info.explanation' %> <%= link_to_modal t('additional_info.help'), '#yaml-help' %>)
</span>
<%= render 'shared/additional_info/yaml_help' %>
</div>
<%= f.input :additional_info, as: :text, input_html: { value: additional_info_value(f)} %>
</div>