What HTML can you customize?

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7

I’m partially quoting the link pasted by simon:

Quick example of filling an outlet with a big red square; Here the outlet is located above the post list in a topic view:

<script type="text/x-handlebars" data-template-name="/connectors/topic-above-post-stream/a-unique-name">
  <div style="height: 200px; width: 200px;background: red"></div>
</script>

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Notice the data-template-name attribute.

Quick example of overriding the navigation bar template:

<script type="text/x-handlebars" data-template-name="components/navigation-bar">
    {{#each navItems as |navItem|}}
      {{navigation-item content=navItem filterMode=filterMode category=category}}
    {{/each}}
    <div style="background: red; padding: 10px; float: left;">I added this block in the navigation bar template</div>
    {{custom-html name="extraNavItem" tagName="li"}}
    {{!- this is done to avoid DIV in the UL, originally {{plugin-outlet name="extra-nav-item"}}
    {{#each connectors as |c|}}
      {{plugin-connector connector=c class=c.classNames tagName="li" args=(hash category=category filterMode=filterMode)}}
    {{/each}}
</script>

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Again, notice the data-template-name attribute.

Here’s the list of templates: discourse/app/assets/javascripts/discourse/app/templates at main · discourse/discourse · GitHub

And a useful theme component that highlight all the outlets locations: Plugin outlet locations theme component

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