# universals

## universals <a href="#universals" id="universals"></a>

**Default Value:** no default value

Platforms may optionally provide platform-specific universal command grammars, such as “help”, “cancel”, or “exit” grammars, that are always active (except in the case of modal input items) and which generate specific events. Production-grade applications often need to define their own universal command grammars, e.g., to increase application portability or to provide a distinctive interface. They specify new universal command grammars with elements. They turn off the default grammars with this property. Default catch handlers are not affected by this property. The value “none” is the default, and means that all platform default universal command grammars are disabled. The value “all” turns them all on. Individual grammars are enabled by listing their names separated by spaces; for example, “cancel exit help”. This property is not supported.

### Example

None

### Explanation

None

### Notes

This property is not supported by Plum DEV.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.plumvoice.com/dev/voicexml/properties/universals.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.