# Document history
<a name="WhatsNew"></a>

This document history describes the important changes to the documentation.
+ **Latest documentation update: **June 3, 2014


| Change | Description | Date Changed | 
| --- | --- | --- | 
| Updated Screen Shots  | The New Batch button changed to Publish Batch. Screen shots were updated in the topic [Publish a batch of HITs](PublishingYourBatchofHITs.md).  | June 3, 2014 | 
| Minor Updates | Various improvements and corrections.  | March 26, 2014 | 
| New Topic: Approving Previously Rejected Assignments | Added a new topic about approving previously rejected assignments that describes how to reverse a rejection using the Requester User Interface. For more information, see [Approve previously rejected assignments](ReversingRejectedAssignment.md).  | January 28, 2013 | 
| New Advanced Properties Option | Updated Edit Properties screen shots for the new Advanced properties option. For more information, see [Create a project](CreatingYourBatchofHITs.md#CreatingaHITTemplate).  | November 15, 2012 | 
| New Topic: How to Create a Sentiment Project | Added a new topic describing how to create a Sentiment project and updated various screen shots.  | October 12, 2012 | 
| New Topic: How to Create a Categorization Project | Added a new topic describing how to create a Categorization project and added new screen shots for the new Create tab.  | August 8, 2012 | 
| More information on Master Workers | More information on Mechanical Turk Master Workers was added to various topics. Master Workers are an elite group of Workers who have demonstrated superior performance working on a number of HIT categories before they are granted Masters Qualification. | July 3, 2012 | 
| New Mechanical Turk HITLayout | New for this release is the ability to create a HITLayout in the Amazon Mechanical Turk Requester UI that can be used with the Mechanical Turk API. A HITLayout is a reusable template used to provide Human Intelligence Task (HIT) question data for [CreateHIT](https://docs.aws.amazon.com/AWSMechTurk/latest/AWSMturkAPI/ApiReference_CreateHITOperation.html). For more information, see [HITLayout](https://docs.aws.amazon.com/AWSMechTurk/latest/AWSMturkAPI/ApiReference_HITLayoutArticle.html).  | March 29, 2012 | 
| Mechanical Turk Review Policies | Amazon Mechanical Turk has added Review Policies that you can use to evaluate Worker submissions against a defined set of criteria. For more information, see [Review Policies](https://docs.aws.amazon.com/AWSMechTurk/latest/AWSMturkAPI/ApiReference_ReviewPoliciesArticle.html).  | December 1, 2011 | 
| Manage Batches | The Manage tab now has a sub tab called Manage Batches. On that sub tab, you can approve and reject work, import and export results, view batch details, and delete a batch. For more information, see [Creating Your Batch of HITs](CreatingYourBatchofHITs.md). | October 4, 2010 | 
| Manage Workers | The Manage tab now has a sub tab called Manage Workers. On that sub tab, you can block Workers, give them bonuses, and assign them a qualification type and score. For more information, see [Managing Workers](ManagingWorkers.md). | October 4, 2010 | 
| Manage Qualification Types | The Manage tab now has a sub tab called Manage Qualification Types. On that sub tab, you can view the details of qualification types and create new ones. For more information, see [Managing Qualification Types](ManagingQualificationTypes.md) | October 4, 2010 | 
| Block or Bonus Workers | Now you can block a worker or award a bonus while reviewing their results. For more information, see [Managing Your HITs](ManagingYourHITs.md). | February 25, 2010 | 
| Reject and Republish | Now you can reject work and republish an assignment while you're reviewing a worker's results. For more information, see [Managing Your HITs](ManagingYourHITs.md). | February 25, 2010 |