When an assessor has shared their comments with you as a participant, they will be visible as a annotated paper (With Feedback) on the flow, where you handed in your paper. This paper can be accessed from the Assessment section of the flowpage, by pressing "See comments".
The annotated paper is divided with general flow comments on top, followed by general comments to the paper (files uploaded by the assessor to comments are downloaded below the text) and the actual paper with annotations situated around where they are located in the paper.
Not all browsers can show annotations in a PDF in their internal PDF viewer. If you do not see the annotations, please download the annotated PDF and view it in Adobe Reader. Adobe Reader can be downloaded from here.