Document Revision History

This table describes the changes to File System Programming Guide.

Date	Notes
2018-04-09	Updates for APFS.
2016-09-13	Expanded the chapter on File Wrappers.
2015-03-09	Clarified the description on how containers are created.
2014-09-17	Updated the information on iOS application sandboxes. Sandboxes are now divided into two separate containers: the Data container and the Bundle container. Also added instructions on exporting the UTI for file wrappers saved to iCloud.
2012-03-08	Corrected a statement about where iOS apps can create new directories.
2012-03-01	Added a note in the Overview about changes to file system behavior when you adopt App Sandbox in an OS X app.
2012-01-09	Added information about supporting iCloud.
	Added iCloud copying, moving, and deleting information.
	Added information about file coordinators and file presenters.
	Added permissions information that was previously available in Security Overview and added an overview to show how the various permissions models interact.
2011-06-06	New document that describes how to create and manage files, directories, and other content in the file system.
	This document covers information that was previously available in File System Overview, Low-Level File Management Programming Topics, and Application File Management.