---
title: debug
card_id: 34213
---

# debug

```
debug checkPoint
```

The `debug checkPoint` command sets a permanent checkpoint in a HyperTalk handler. When HyperCard runs a handler, the `debug checkpoint` command causes HyperCard to enter the debugger; it pauses execution of the handler and opens a script editor window with a box around the line with the checkpoint.

This command works only when the `userlevel` property is set to 5.

Click Related Topics for information about debugging scripts.

## Related Topics

* [Debug a script](/HyperTalkReference/editingscripts/Debug-a-script)
* [debugger](/HyperTalkReference/properties/debugger)