* Class to encrypt and decrypt Rot-13 messages.

* Single characters are encoded by rotating the ASCII code for the specific character.

* A string of text can be encrypted and decrypted by rotating the ASCII code for the specific text and is displayed on a dialog window.

* The text conversion loop stops when the user enters "quit".-

*　Class to encrypt and decrypt Rot-13 messages.

*　Single characters are encoded by　rotating the ASCII code for the specific character.

*　A string of text can be encrypted and decrypted by rotating the ASCII code for the specific text and is displayed on a dialog window.

*　The text conversion loop stops when the user enters "quit".