This book covers all aspects of computer document preparation text processing and printing. Computers are being used increasingly in the processing of documents, from simple textual material, such as letters and memos, to complete books with mathematical formulae and graphics. The material may be extensively edited and manipulated on the computer before subsequent output on media such as typewriters, laser printers or photocomposers. This volume contains contributions from several established leaders in the field, and a number of research articles referred by an international programme committee. As such, the book gives a good impression of the state-of-the art in this area, which is of major importance in this 'electronic age' where on-line information retrieval and electronic publishing will increasingly affect our everyday life.