COMN Sense combines two or three key parts to form a complete key, and uses these to encrypt or decrypt a given text. Each of these key parts could be a series of keys really that are applied iteratively. Encryption may be applied to an entire text or just selected sections of keywords or sentences, by surrounding them with the special <ENCRYPT> and </ENCRYPT> tags.
The COMN sense scheme can be used to write a message to two or three different parties, where the message consists of a base text that is visible to all parties while the sections surrounded by special tags are not. Instead these are nestingly encrypted.