Drawn from the experience of various ministries and departments in governments across Canada, this guide is meant to be a practical guide in implementing plain language for managers in the Ontario (Canada) government. The guide describes how to use plain language in planning, writing, designing, and editing forms and documents, and how to set up and manage plain language projects. Sections of the guide are: (1) What Plain Language Can Do for Your Ministry; (2) What Is Plain Language?; (3) Barriers to Implementing Plain Language; (4) Organizing the Plain Language Project (including audience analysis, matching needs, document design, testing, revisions, and evaluation); (5) Managing Your Resources; (6) Long-Range Planning for Plain Language; and (7) For More Information. Appendixes present a sample plain language project outline and a sample plain language training plan. (RS)