View, Edit, and Comment Permissions
Collaborators are only given permission to view the file that the creator has shared with them. Collaborators have the option to “Make a Copy”, which allows them to have a copy of the file within their own Google Drive.
Collaborators are given permission to edit the file that was share with them. This allows everyone the accessibility to work on the document at the same time. Users are able determine which users made edits by “Version History.” Version History will determine what users made edits within the document and where.
When given the permission to comment on the creators work, users are able to view the file and make comments throughout without being able to change the content of the document directly.