Those working on Site administration: DO NOT use a live site to practice the interactive tasks, as some changes made may not be reversible. Setting changes should not be attempted on a live production server until all ramifications of such changes have been carefully considered.

Those working on Course development: DO NOT use a live course to practice the interactive tasks, as the changes may cause confusion for learners. Course activity changes can be implemented in live courses after considering the effects within a hidden test course.