You can create a new version of presentations to record important changes made to them.
To create a new version of the open document, follow the steps below:
1.In the Command menu, select File > Create new version.
2.In the opened dialog window, specify the name of the new version of the file and click OK.
You can view and edit the created version (and earlier versions) in the Version history of each document, which can be found in MyOffice Documents application. To find out more about working with the Version history, please refer to the documentation of MyOffice Documents.