I've been playing with Textedit under Lion for the past couple of days, trying to understand Lion's new Versions feature and I've come away quite impressed (especially the Time Machine style interface when you've got multiple versions to choose from). What I'm struggling to find out at the moment though is what other applications support it. For example, I can see that Open Office most certainly doesn't support this feature. Is this restricted to Apple applications at the moment (or are we waiting for even these to be rewritten to take advantage)? What about Microsoft Office? Was this developed with Lion's Versions feature in mind?