The clapperboard combines a 'chalkboard slate' or perspex board with 'filmsticks' or 'clappersticks'. The sound is synched to the film using a clapperboard as a reference. He has been anachronistically claimed to have been the inventor of the clapperboard. A "clapperboard" (BG) will indicate such songs. Film takes are often designated with the aid of a clapperboard. At one stage there is use of a clapperboard. The title is the Italian word (also spelled "ciac", for a film clapperboard. A clapperboard indicate a special background videos will be played during the song. The chief guest V. V. Vinayak tapped the clapperboard while Ravindranath switched on the camera. The clapperboard is labeled to identify the scene, shot, and take number for the camera. She devised "Clapperboard", presented by Chris Kelly, Granada's film magazine show for children.