The Primary panel is always at the top of the active window or tab.
Most commands of the Primary panel are available regardless the selected tool.
The Cut
(Ctrl+X) and Copy
(Ctrl+C) buttons are active if any objects selected. The Paste
button is available if the clipboard contains data appropriate for the active tab.
The Print
(Ctrl+P) button is active in 3D View tab, in drawing, level and assembly tabs.