Many terms used in this book can have more than one meaning, depending on the country. This glossary provides explanations of terms and their equivalent British and American names as compiled by Ken Hall.

I80 degree rule  See crossing the line.

1+1  One plus one. One presenter plus one guest.

2+4  Two presenters plus four guests.

4-wire  Bidirectional (two-way) communications wire.

5.1  Sound-surround sound system that has been accepted as part of the HDTV standard for the United States.

A/D  Conversion converting an analog signal to a digital signal.

Actuality event  Any event that is not specifically staged for television that exists in its own time scale.

Additive colors  The color system that mixes colored light ...

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