Customizable features include user-controlled navigation and self-pacedstudy, progressive levels of complexity, and progress reports. There arereference materials, including notes, libraries, and glossaries, as well asmultimedia features such as audio, video, photos, 3-D-renderedimages, and animation. The instructional puzzles and games come withadjustable skill levels to reinforce academic content. The program ishassle-free with easy installation and use, simple, streamlinednavigation, and it allows you to track each user's scores and progress.