Picasa for Mac
By Weijun on Jan 08, 2009
Now I can do the so-called non-destructive edit again. Picasa for Mac still recognizes all previous edit made in Windows, the Picasa.ini file I mean. It would update the file if you make more edit. When there's no Picasa.ini, it happily creates a .picasa.ini file, which is the standard Unix style to name a hidden file.
I believe Picasa for Windows will recognize .picasa.ini also.