> For the complete documentation index, see [llms.txt](https://soufatn.gitbook.io/rxjs-book/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://soufatn.gitbook.io/rxjs-book/summary/observable/observable_instance_methods/controlled.md).

# controlled

Attaches a controller to the observable sequence with the ability to queue.

## Arguments

1. `[enableQueue]` *(Boolean)*: Whether to enable queueing.  If not specified, defaults to true.

## Returns

*(`Observable`)*: An observable sequence which can be used to request values from the sequence.

## Example