Performance lighting designers develop a lighting design concept for a performance and supervise the execution of it. Their work is based on research and artistic vision. Their design is influenced by and influences other designs and must be conform with these designs and the overall artistic vision. Therefore, the designers work closely with artistic directors, operators and the artistic team. During rehearsals and performance, they coach the operators to obtain optimal timing and manipulation. Performance lighting designers develop lighting plots, cue lists and other documentation to support the operators and production crew. They sometimes also work as autonomous artists, creating light art outside a performance context.