Participation by text or diagrams printed on paper or other recording medium where the recording was performed using a typewriter, typesetter, computer or similar mechanism.

Participation by direct action where subject and actor are in the same location. (The participation involves more than communication).

Participation by direct action where subject and actor are in separate locations, and the actions of the actor are transmitted by electronic or mechanical means. (The participation involves more than communication).

Participation by text or diagrams printed on paper or other recording medium.

Participation by voice communication where the voices of the communicating parties are transported over an electronic medium.

Participation by text or diagrams printed on paper that have been transmitted over a fax device.

Participation by pre-recorded voice. Communication is limited to one direction (from the recorder to recipient).

Participation by text or diagrams transmitted over an electronic mail system.

Participation by voice communication where parties speak to each other directly.

Participation by non-human-language based electronic signal.

Participation by voice communication.

Participation by voice and visual communication where the voices and images of the communicating parties are transported over an electronic medium.

Participation by human language recorded on a physical material.