This test requires Ghostscript to be installed on the server. It also requires an assignment activity.

1. Log in as a student and upload a PDF as submission to the assignment.
2. Log in as a teacher, go to the assignment and grade the student.
3. Click "Launch PDF Editor" on the grading page to start the editor and then try all the different options in the editor.
4. When you are done, click the 'Save changes' button.
5. Check that a feedback PDF has been generated and that all edits are saved correctly.
6. Log in as the student and access the assignment.
7. View the feedback PDF and check that all feedback is displayed correctly.
8. Repeat steps 2 to 5 in a different browser, adding a comment to this issue mentioning which browsers you have used.