 If a student uploads a PDF file as an assignment submission in Moodle 2.6, the teacher can annotate it directly on the course page rather than needing to download it. This feature can be accessed by going to the individual student's grading screen and then scrolling down to the feedback area and clicking Launch PDF Editor. This then displays the student's assignment with options at the top for the teacher to, for example, add stamps the administrator might have uploaded or highlight certain words or phrases in the text, or add comments and the teacher may either write the comments directly themselves or choose from a comment that they've previously saved. Once they've saved the submission, it can be returned to the students with the annotations displayed.