**To start detecting text in a multi-page document**

The following ``start-document-text-detection`` example shows how to start asynchronous detection of text in a multi-page document. ::

    aws textract start-document-text-detection --document-location '{"S3Object":{"Bucket":"reescheastv","Name":"doctest.png"}}' --notification-channel "SNSTopicArn=topicARN,RoleArn=roleARN"

The command returns output similar to the following. ::

    {
        "JobId": "57849a3dc627d4df74123dca269d69f7b89329c870c65bb16c9fd63409d200b9"
    }

For more information, see `Detecting and Analyzing Text in Multi-Page Documents`_ in the *Amazon Textract Developers Guide*

.. _`Detecting and Analyzing Text in Multi-Page Documents`: https://docs.aws.amazon.com/textract/latest/dg/async.html