It allows the classic "undo" option and also gives you some new sophisticated masking tools. Those are just a couple features in TIFFany3 Basic. When you get into the Professional version, things really start taking shape.
This is a good program if you just want to get started in graphics or if you want to expand upon what you already know. Enjoy!
The price is for TIFFany3 Basic only. The professional version is more. Please visit the site for more details.
Mac OS X Public Beta