The revision is expected roughly to double the dictionary in size. Apart from general updates to include information on new words and other changes in the language, the third edition brings many other improvements, including changes in formatting and stylistic conventions for easier reading and computerized searching, more etymological information, and a general change of focus away from individual words towards more general coverage of the language as a whole. While the original text drew its quotations mainly from literary sources such as novels, plays, and poetry, with additional material from newspapers and academic journals, the new edition will reference more kinds of material that were unavailable to the editors of previous editions, such as wills, inventories, account books, diaries, journals, and letters.