# Loader Introduction

Athena is an addition to the normal blockstate JSON, loader information is stored inside the blockstate JSON each stitch model will have a `athena:loader` that will identify what loader to use.

{% tabs %}
{% tab title="Example" %}

```json
{
  "variants": {
    "": {
      "model": "minecraft:block/air"
    }
  },

  "athena:loader": "athena:ctm",
  "ctm_textures": {
    "center": "chipped:block/amethyst_block/ctm/cut_amethyst_block_column_ctm/3",
    "empty": "chipped:block/amethyst_block/ctm/cut_amethyst_block_column_ctm/0",
    "horizontal": "chipped:block/amethyst_block/ctm/cut_amethyst_block_column_ctm/2",
    "particle": "chipped:block/amethyst_block/cut_amethyst_block_column",
    "vertical": "chipped:block/amethyst_block/ctm/cut_amethyst_block_column_ctm/1"
  }
}
```

{% endtab %}
{% endtabs %}

## Built-In Loaders

<table data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td></td><td>Full Cube CTM</td><td></td><td><a href="/pages/dv8BCsoK9MrFqsGJLEDc">/pages/dv8BCsoK9MrFqsGJLEDc</a></td></tr><tr><td></td><td>Carpet CTM</td><td></td><td><a href="/pages/T84YLSav5SU4vxQMkBvs">/pages/T84YLSav5SU4vxQMkBvs</a></td></tr><tr><td></td><td>Pane CTM</td><td></td><td><a href="/pages/bA3LvBjTq1XGaDyIkfYh">/pages/bA3LvBjTq1XGaDyIkfYh</a></td></tr><tr><td></td><td>Mural</td><td></td><td><a href="/pages/cCHhy10QQOhPm2LMGmcu">/pages/cCHhy10QQOhPm2LMGmcu</a></td></tr><tr><td></td><td>Pillar</td><td></td><td><a href="/pages/VVyJ4Y2lNXp1qCPZYv9g">/pages/VVyJ4Y2lNXp1qCPZYv9g</a></td></tr><tr><td></td><td>Vertical Pillar</td><td></td><td><a href="/pages/8NEZyUpAxYSJa9mO1zOm">/pages/8NEZyUpAxYSJa9mO1zOm</a></td></tr><tr><td></td><td>Pane PIllar</td><td></td><td><a href="/pages/DtuK9qnmHOz1gowbjsOk">/pages/DtuK9qnmHOz1gowbjsOk</a></td></tr></tbody></table>


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```
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```

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