A Compare File is automatically created within the Change Summary section when a document is being revised. The file is a PDF file, showing the differences between the two files, and includes a DO NOT DISTRIBUTE watermark.
Currently, the change summary will only be generated when the file associated with a document is an MS Word file. Other file types will not generate a summary file. (In the event where a change summary file could not be automatically be generated for any other reason, a notice will be displayed to inform the user.)
It is also good to note that, while the change summary can be automatically generated, it is also possible to manually attach any other kind of file as a change summary on a document. So, if for instance, the file type is not an MS Word file, or if the change summary could not be generated, a file listing the latest changes could be attached instead.
The attached document and the video below provide information on this feature.