Stage and Tools panel
Context menus
Context menus contain commands relevant to the current selection. For example, when you select a frame in the Timeline window, the context menu contains commands for creating, deleting, and modifying frames and keyframes. Context menus exist for many items and controls in many locations, including on the Stage, in the Timeline, in the Library panel, and in the Actions panel.
Right-click (Windows) or Control-click (Macintosh) an item.
Solution used by Adobe -
context menus make working with flash much more easier and take part in simplifying usage of Flash tools. You don't need to see all of various options connected to diverse tools. It would be horrible. Instead of this You are able to see options strictly connected to tool You have currently selected.