Years ago, Microsoft Word had capability to save versions of a file within a file. I can't find anything like that in Office 2011 … is Microsoft's Office implementation of versions deprecated? Related: superuser.com/a/154445/84988
I don't plan to use Microsoft's versions within any version of Microsoft Word. The bigger picture was, experimenting as an end user of Sharepoint Server 2010, where I can't find version information … which probably means that the service in our case is configured to not support versions.
According to the incredibly useful iOS support matrix v 2.0 (Winter 2012) done by Empirical Magic, you are at the end of the line running iOS 4.2.1 on an iPod touch (2nd generation).
Apps that target 4.3 or newer are just not going to run on that device unless the developers re-add support fo...
That chart is really great, imagine the android equivalent ;) It shows that every device that has ever ran iOS has had at least 3 full versions available before obsolescence, each available on day one of release - the 3GS has even had 4.