Contains various options relating to the 3D viewports, such as Configuration, Display Mode, Shading Options, etc.
This part of the menu handles the undo, redo, selection, clear, harden, grow and many other operations.
Contains various options for drawing the objects in the viewport, such as smoothing, wireframe, stippling, etc.
The Display Mode determines how the viewport will be displayed. For texture painting, choose one of the map channels (e.g. Color, Bump, etc.). For Display Group editing, choose "Display Group Colors".
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Version 5 features a new interface that gives you more working room with menus driven by hot keys.