rust/src/librustdoc/html/templates/print_item.html

<div class="main-heading"> {# #}
    <h1>
        {{typ}}
        {# The breadcrumbs of the item path, like std::string #}
        {% for component in path_components %}
            <a href="{{component.path|safe}}index.html">{{component.name}}</a>::<wbr>
        {% endfor %}
        <a class="{{item_type}}" href="#">{{name}}</a> {# #}
        <button id="copy-path" title="Copy item path to clipboard"> {# #}
            Copy item path {# #}
        </button> {# #}
    </h1> {# #}
    <span class="out-of-band">
        {% if !stability_since_raw.is_empty() %}
        {{ stability_since_raw|safe +}} · {#+ #}
        {% endif %}
        {% match src_href %}
            {% when Some with (href) %}
                <a class="src" href="{{href|safe}}">source</a> · {#+ #}
            {% else %}
        {% endmatch %}
        <button id="toggle-all-docs" title="collapse all docs"> {# #}
            [<span>&#x2212;</span>] {# #}
        </button> {# #}
    </span> {# #}
</div> {# #}