Is it possible, without sending the physical file by email, to share a file (which is not an iWork document) with other people? In Pages you can share a file by sending the person you want to share it with a link to the document - this prevents issues with there being more than one version of the file on more than one computer. Can you do this on iCloud Drive for any document? If not, was it promised that it was an upcoming feature (like the Photos app)?