How can I add an editable static section to Shopify? - e-commerce

Question

I’ve been playing around with Shopify’s sections feature. I thought I’d start simple, with a two field static section, to let admins edit the content of a help modal.
I read all the documentation I could find (not a whole lot), and “borrowed” some code from the Debut theme’s header section.
I have created a section file called help.liquid, and called it on my home page using {% section ‘help’ %}
The content is outputting on the page as expected, and the Help section is visible in the Sections tab of the admin system, but is uneducable. There must be something I’m missing, but I can’t work out what it is!
The code in my section file is as follows:
<div data-section-id="{{ section.id }}" data-section-type="help-section">
<div class="modal modal--help">
<div class="modal__hd">
<h2 class="modal__title">{{ section.settings.help_title }}</h2>
</div>
<div class="modal__bd">
{{ section.settings.help_content }}
</div>
</div>
</div>
{% schema %}
{
"name": "Help",
"settings": [
{
"type": "text",
"id": "help_title",
"label": "Help title",
"default": "Help"
},
{
"type": "text",
"id": "help_content",
"label": "Help content",
"default": "Here's some info on getting help"
}
]
}
{% endschema %}