Writer (1)

Can view both their completed and uncompleted assignments
Can edit assignment flavour texts and captions, type their articles, and upload images - before they mark the content as completed. They may not edit any other fields.
Once marked as completed, they may have to wait until the assignment is deemed ready to be published if the administrator has turned on this option in the advanced configuration panel (See Site Preferences)
May edit their profile, upload a portrait photo, and specify their interests (unless specifically disabled)
May send and receive private messages to and from anyone (unless specifically disabled)