The use of language (visual, oral, or tactile) is not the only important aspect of discourse and communication. Other facets of discursive exchange include identification, context, content, and form as well as the active participation of both author and reader. Each mural presents the viewer with a discursive utterance that employs various aspects of proxemic, verbal, and nonverbal codes for the performance of a speech act as well as reaction, mimesis, or response to the utterances of other murals involved in the exchange.