Crystal Tipps and Alistair films for the Central Office of Information. The series has no dialogue but rather is accompanied by a full musical soundtrack composed by Paul Reade; however, when shown on "Captain Kangaroo" in the U.S. in the 1970s the series did have voice-over narration by Cosmo "Gus" Allegretti in his high-pitched "Mister Moose" voice. Crystal's Christmas Special was shown on 25 December 1974. Crystal Tipps and Alistair Crystal Tipps and Alistair is a British cartoon produced for the BBC. The title characters are a girl and her dog who are joined by their friends Birdie and Butterfly. There are 50 five-minute
David Crystal difficult to spell. His companion book, "Making a Point: The Pernickety Story of English Punctuation" came out in 2015 from Profile Books (UK) and St. Martin's Press (USA). Crystal is a proponent of a new field of study, Internet linguistics, and has published "Language and the Internet" (2001) on the subject. Crystal's book "" (2008) focused on text language and its impact on society. From 2001 to 2006, Crystal served as the Chairman of Crystal Reference Systems Limited, a provider of reference content and Internet search and advertising technology. The company's iSense and Sitescreen products are based upon the patented