Search for Non-Standard Tags

Hello everyone...
I just found this program and I do like it very much.

Now, is it possible to search ID3 tags for all non-standard fields, such as COMMENT XXXXX or even other fields that may begin with ITUN, etc.? I'm refering to tags that are not already listed in the "extended tags" area and could be listed really as anything.

I'm looking to clean up the mess left behind from all of the different media programs I've used and such.

Nevermind, I got it.