> For the complete documentation index, see [llms.txt](https://todepond.gitbook.io/spacetode/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://todepond.gitbook.io/spacetode/behave.md).

# Behave

You need to know how the engine works on the backend to use this effectively.\
The behave keyword lets you write plain JavaScript to manually define what to do.

```
element Vanisher {
    behave (origin) => SPACE.setAtom(origin, new Empty(), Empty)
}
```