Parsifal Katzenellenbogen (Tony Curtis) is an eccentric hypochondriac who has invented a laser skywriter. Mr. Rogers describes the day he met a skywriter. The Jackson 5 would later record a cover version on their 1973 album "Skywriter". All these changes have been merged back to Ace now, which supersedes Skywriter. Skywriter encourages a more shared environment where data can be accessed from any machine.