My first elementary concept since August (crazy exam schedules and coursework deadlines have kept me plenty busy). A simple writing application. The top bar is static and used for document wide actions, like open, save, print and document properties, as well as an undo and redo button. The second bar is dynamic, the buttons changing depending on the content selected. The top bar is for text editing, the second for image properties and the third for tables. In this way only the functions needed are seen at any one time, but could still be searchable by something like Unity's HUD.