example.liquid

# -- Collection many to many Pages --
# templates/collection.liquid
<div data-relatable="collection.pages" data-relatable-id="{{collection.id}}">
  {% raw %}
    {{#pages}}
      <a href="/pages/{{handle}}">{{title}}</a>
    {{/pages}}
  {% endraw %}
</div>

# templates/page.liquid
<div data-relatable="page.collections" data-relatable-id="{{page.id}}">
  {% raw %}
    {{#collections}}
      <a href="/collections/{{handle}}">{{title}}</a>
    {{/collections}}
  {% endraw %}
</div>

# -- Product many to many Article --
# templates/product.liquid
<div data-relatable="product.articles" data-relatable-id="{{product.id}}">
  {% raw %}
    {{#articles}}
      <a href="/articles/{{id}}">{{title}}</a>
    {{/articles}}
  {% endraw %}
</div>