I have a user with an editor-role. The dictionary items in this site are in the System-segment, and that’s not shown to this useHowever, only the Content- and ImageNodes are visible in the content-tree. Adding roles does not make them appear. Until I read this quick start and the Application Options came to my attention. For the Personalisation of the Sitecore environment I can activate the “Show the Personalization Section” checkbox.
What about the “Show Entire Content Tree”? Bummer. However, in the Content Editor-tab I noticed the show hidden items-checkbox.