Update: Wikidpad uses the following autosave rules (for overwriting original files): If keyboard idle time is 5-15 seconds or 60 seconds have passed, an autosave occurs. This has been a very useful time and distraction saver. Microsoft OneNote has a similar autosave, to good effect.
Would be useful to also have a true autosave option that overwrites original file. You won't have to keep hitting Ctrl+S. This could supplement the current autosave behavior of copies being saved at intervals under other names.
For a good example see behavior in Wikidpad and Flashnote where you never have to manually save since that is done automatically in the background. Very useful.
