include the Cambridge Guide to Australian English Usage, the Australian Government Style Manual (formerly the Style Manual: For Authors, Editors and Printers), the Australian Handbook for Writers and Editors and the Complete Guide to English Usage for Australian Students. Both single and double quotation marks are in use, with single quotation marks preferred for use in the first instance, with double quotation marks reserved for quotes of speech within speech. Logical (as opposed to typesetter's) punctuation is preferred for punctuation marks at the end of quotations. For instance, Sam said he 'wasn't happy when Jane told David to "go away"'. is used in preference to Sam said he "wasn't happy when Jane told David to 'go away.'" The DD/MM/YYYY date format is followed and the 12-hour clock is generally used in everyday life (as opposed to service, police, and airline applications). With the exception of screen sizes, metric units are used in everyday life, having supplanted imperial units upon the country's switch to the metric system in the 1970s, although imperial units persist in casual references to a person's height. Tyre and bolt sizes (for example) are defined in imperial units where appropriate for technical reasons. In betting, decimal odds are used in preference to fractional odds, as used in the United Kingdom, or moneyline odds in the United States. Keyboard layout There are two major English language keyboard layouts, the United States layout and the United Kingdom layout. Keyboards and keyboard software for the Australian market universally uses the US keyboard layout, which lacks the pound (£), euro and negation symbols and uses a different layout for punctuation symbols from the UK keyboard layout. See also The Australian National Dictionary Australian English vocabulary New Zealand English South African English Zimbabwean English Falkland Islands English Diminutives in Australian English International Phonetic Alphabet chart for English dialects Strine References Citations Works cited Further reading Mitchell, Alexander G. (1995). The Story of Australian English. Sydney: Dictionary Research Centre. External links Aussie English, The Illustrated Dictionary of Australian English Australian National Dictionary Centre free newsletter from the Australian National Dictionary Centre, which includes articles on Australian English Australian Word Map at the ABC—documents regionalisms R. Mannell, F. Cox and J. Harrington (2009), An Introduction to Phonetics and Phonology, Macquarie University Aussie English for beginners—the origins, meanings and a quiz to test your knowledge at the National Museum of Australia. Languages attested from the