It’s easy to use, it is very fast, I highly recommend using this software to track large files with many layers of transparency.It does what you need without being overbearing like some other programs do. Nothing really, it works as intended. Sometimes the interface gets in the way and requires too much workarounds to get things done.If you are looking for software that can manage very large images then try.It is reliable and has all the tools you need.I am managing images with several transparency levels at the same time and have no issues.