Hi all, I'm seriously thinking about making the switch from my Air to iPad Pro as a laptop replacement. One thing that's not clear to me is how well it works offline. I spend a decent amount of time on planes, sometimes without wifi. If I want to, say, edit a Word doc, a Keynote deck or Google Spreadsheet, how well would that work? Do I have to specify ahead of time which docs I want to save an offline copy of? Can I even do that? Basically, I want to know how hard it'll be to access my stuff if I have to use the iPad without a connection. Thanks!