The basic principle is that if you need to edit a highly confidential text file, you don't ever want to write that file to disk in plain format, even temporarily.

As well as being a cryptographic text editor, Wuul Crypto Text can encrypt any piece of text for you and place it into an "output window" where it can be easily copied to the clipboard.

This can be useful if you want to encrypt a piece of text and send it in an email, for example - you do realize that the person you send it to will need a copy of Wuul Crypto Text as well as the password used.