Cabinet Sign: A sign structure consisting of the frame and face(s), not including the internal components, embellishments, or support structure.
Changeable-Copy Sign: A sign or portion thereof on which the copy or symbols change either automatically through electrical or electronic means (for example, time and temperature units), or manually through placement of letters or symbols on a panel mounted in or on a track system.
Channel Letter: A fabricated or formed three-dimensional letter that may accommodate a light source.
