Context toolbars provide convenient access to frequently-used functions specific to the current task. To open a context toolbar, click the left mouse button. 
Setup tasks (except Meshing)
-  To assign or modify settings, click Edit (a). 
- To deselect an entity, click Remove (b). 
- To hide a selected entity or show all entities, click Hide or Show all (c). 
 
Meshing task
- To assign or modify settings, click Edit (a). 
- To apply Automatic Sizing (b), construct Refinement Regions (c), run Diagnostics (d), and Suppress (e) or Resume (f) parts. 
- To hide a selected entity or show all entities, click Hide or Show all (g). 
 
For more about meshing...
Plane task (in Results)
- Left click on the active result plane. 
- Orient the plane (a). 
- Modify appearance (b). 
- Open Plane tools: Control, Traces, XY Plot, Bulk (c). 
 
For more about results planes...