Changes

# As an aid to education, both by recording lectures, demonstrations, or field trips, and by repeating the voice and image of a lecturer to multiple locations in a large room, or even multiple rooms, to ensure that every attendee of a lecture is able to see and hear the speaker(s).

# As an aid to education, both by recording lectures, demonstrations, or field trips, and by repeating the voice and image of a lecturer to multiple locations in a large room, or even multiple rooms, to ensure that every attendee of a lecture is able to see and hear the speaker(s).

# As a means of disseminating current events.

# As a means of disseminating current events.

# As a means of recording any action or actions that might become the subject of a legal contest. This is especially true today of police officers who might stand accused of the use of excessive force in the performance of duty, or otherwise improper performance of duty.

# As a means of recording any action or actions that might become the subject of a legal contest. This is especially true today of [[police]] officers who might stand accused of the use of excessive force in the performance of duty, or otherwise improper performance of duty.

# As a means of setting a watch on any gate, room, or other venue that might become the scene of a crime or come under external attack.

# As a means of setting a watch on any gate, room, or other venue that might become the scene of a crime or come under external attack.

# As a means of improved communication.

# As a means of improved communication.