For many of us, hitting Command-S once in a while as we work has become second nature. And many of us have developed workflows built around the Save As command–to create new files based on old ones, to preserve specific versions of files (Proposal v1.0 saved as Proposal v1.1), or to quickly copy file to new locations.
Fortunately, you can use Lion’s Auto Save and its associated commands to do all of that. You just have to get used to the new nomenclature.
- Versions and Auto Save explained (macworld.com)