<fieldset id="html_version_fields">
  <legend>HTML version</legend>

  <span class='help-block'>These fields are optional: if you don't require an HTML version, please leave them blank.</span>

  <%= form.fields_for :html_version do |html_version_fields| %>
    <%= html_version_fields.text_field :title, label_text: "HTML version title", required: false %>
    <%= html_version_fields.text_area :body, label_text: "HTML version text", class: "previewable", required: false %>
    <%= html_version_fields.check_box :manually_numbered, label_text: 'Manually number headings' %>
    <div class="js-manual-numbering-help<%= ' js-hidden' unless html_version_fields.object.manually_numbered? %>">
      <pre>
## 1. First heading
### 1.1 First sub-heading
### 1.2 Second sub-heading
### Unnumbered sub-heading

Manually number your headings as appropriate using the above numbering scheme.</pre>
    </div>
  <% end %>
</fieldset>

<fieldset id="html_version_fields">
  <legend>HTML version</legend>

  <span class='help-block'>These fields are optional: if you don't require an HTML version, please leave them blank.</span>

  <%= form.fields_for :html_version do |html_version_fields| %>
    <%= html_version_fields.text_field :title, label_text: "HTML version title", required: false %>
    <%= html_version_fields.text_area :body, label_text: "HTML version text", class: "previewable", required: false %>
    <%= html_version_fields.check_box :manually_numbered, label_text: 'No automatic numbering on headings' %>
    <div class="js-manual-numbering-help<%= ' js-hidden' unless html_version_fields.object.manually_numbered? %>">
      <pre>
## 1. First heading
### 1.1 First sub-heading
### 1.2 Second sub-heading
### Unnumbered sub-heading

Manually number your headings as appropriate using the above numbering scheme.</pre>
    </div>
  <% end %>
</fieldset>

Rename "manually number headings" checkbox
Rename "manually number headings" checkbox

https://www.pivotaltracker.com/story/show/58800766
