# SEMANTIC_ATTR13

Variable · category: Graphics

Source: https://github.com/playcanvas/engine/blob/b5b983982a9860d21e0c1dafb2f85f72e2c01afb/src/platform/graphics/constants.js#L1602

Vertex attribute with a user defined semantic.

```ts
const SEMANTIC_ATTR13: "ATTR13" = 'ATTR13'
```