Select > Object/Component (Switch between object and component editing)
F9
Select > Vertex
F10
Select > Edge
F11
Select > Face
F12
Select > UV
Ctrl
i
Select next intermediate object
Alt
F9
Select > Vertex Face
<
Shrink polygon selection region
>
Grow polygon selection region
Pick Walk*
Up
Walk up current
Down
Walk down current
Left
Walk left in current
Right
Walk right in current
*Based on selection, the arrow keys let you walk up the hierarchy (object selected) or walk about the object’s components
(component selected, including vertices, edge loops, edge rings).