Sensorium messages are a way for one cladist to share some or all of their senses (their sensorium) with one or more other cladists. Messages can be half-duplex (from one cladist to another) or full-duplex (a full conversation between two cladists). They may also be queued up to send once they are finished. Often, a cladist will fork into a recording instance which will watch their down-tree speak a message so that the recipient can see the cladist speaking.