Depending on your environment you'll want to use render or include. As a rule of thumb: server-side use include, precompiled browser use render. If you're using vf-eleventy you should use include.

Using include

You'll need to pass a context object from your code or Yaml file (example), as well as the path to the Nunjucks template. Nunjucks' include is an abstraction of render and provides some additional portability.

{% set context fromYourYamlFile %}
- or -
{% set context = { 
"component-type" : "block",
"heading" : "Strategy &amp Communications",
"subheading" : "Blog",
 }
%}
{% include "../path_to/vf-page-header/vf-page-header.njk" %}
                

Using render

This approach is best for bare-bones Nunjucks environments, such as precompiled templates with the Nunjucks slim runtime where include is not be available.

{% render '@vf-page-header', {
  "component-type" : "block",
  "heading" : "Strategy &amp Communications",
  "subheading" : "Blog",}
%}
                

<header class="vf-page-header">
  <h1 class="vf-page-header__heading">Strategy &amp Communications</h1>
  <span class="vf-page-header__sub-heading">Blog</span>
</header>