On the left hand side you have options to change the publication.
Modify data: this will change the data of the publication, for example the name of ‘Scrooge McDuck’.
View changelog: this will show all the changes made to the publication
Change template: this option allows you to switch between the templates
Image editor: this will give you the option to edit images in the publication. You don’t have the option to upload new images to the file.