Uploading your comments
Some people prefer to make comments outside of the submitted file. This can be practical if the document is quite large and maybe is read as a paper version rather than electronically.
The comments are then written in Word, for example, and are uploaded as a normal file:

This option gets you to this picture:

As you can see you can choose the position of the comment file: Either from the PC or from the Archive, and when it is uploaded we can find it here:

Here you will see that your comment will get the file name it was given when it was created. If you want to delete this comment file you click on Recreate version without comments.