---
title: Svg.defs
---

The `Svg.defs` property holds a [Defs object](/reference/api/defs) that holds
the contents of [the defs
section](https://developer.mozilla.org/en-US/docs/Web/SVG/Element/defs) of the
SVG document.

## Signature

```js
Defs svg.defs = {
  list = {
    buttonhole: `<g id="buttonhole" transform="scale(1)">
      <path class="mark" d="M -1,-5 L 1,-5 L 1,5 L -1,5 z"></path>
    </g>`,
  },
}
```

Result:
```
<defs>
  <g id="buttonhole" transform="scale(1)">
    <path class="mark" d="M -1,-5 L 1,-5 L 1,5 L -1,5 z"></path>
  </g>
</defs>
```