This paper describes the research and development of a fully World Wide Web-based credit course in the English Department at the University of Waterloo (Ontario). One hundred students from across Canada complete four exercises in technical writing over a four-month term. In the process, they learn to understand and apply the principles of SGML (Standard Generalized Markup Language) design in their assignments and in the profession generally. Their assignments are converted and displayed on the course Web site for markers' assessments and for their shared use. Students employ the same tools, software and designs that the instructors use to create all aspects of the course materials. Through this exposure, they are able to evaluate instructional methods by practicing them in their own work. Half the course grade is derived from students working entirely online in groups of three. All aspects of instruction are supervised and integrated by instructors using newsgroups, chat, online tutorials and instructor comments. A commercial version of the course is available to organizations for their training needs. (Author/AEF)