No Folder/File Masks

I’ve used Comodo Backup 1.x about a year ago, but had a few problems (especially running as a service). When I saw the new Version 2 beta, I began to follow its posts on the forum. I downloaded and tried the current release candidate (RC2). I did not find a provision for folder/file masks that would allow “inclusion” and/or "exclusion of files or folders. I’ve always found that to be a very necessary part of a good backup program. Comodo’s version 1.x had the feature. Did I just miss this feature or is it really not there? If it has been removed, what provisions allow for exclusion of certain file types or inclusion of certain files with particular extensions yet to be created?

Thanks for your assistance. -SA Jack