This work and the free workbook which accompanies it, give technical editors and students of technical editing a practical guide for editing both the substance and the structure of a technical document. The authors share their expertise as teachers and practitioners, showing the reader how a thorough understanding of technical English not only improves the quality of the edited piece, but also elevates the profession of technical editing to more than comma placement, spelling checks, and grammar corrections. significant attention is given to the concept of the "techology of English". The authors advocate that editors equipped with expertise in their own technology ar better prepared to work in successful parnership with technical writers, thereby producing a more readable finished product. Bush and Campbell also update age-old editing advice to reflect upon the modern reality of computers and electronic publishing as well English usage and grammar. A companion workbook accompanies this book, at no extra cost. It contains exercises, taken from actual technical reports and other documenrs, which should help students gain proficiency in technical editing as well as enabling editing professionals to hone existing skills or to develop new ones. Practice exercises, complete with suggested solutions, cover: following conventions (for example, style books, editing marks, grammar, punctuation and so on); using transformational grammar; improving sentences; improving paragraphs; and improving longer documents.