Select More/Less
Reference
Mode:
Edit Mode
Menu:
Select ‣ Select More/Less ‣ More
Shortcut:
Ctrl-NumpadPlus
Menu:
Select ‣ Select More/Less ‣ Less
Shortcut:
Ctrl-NumpadMinus
With at least one vertex, edge, or face selected, Select More/Less expands or shrinks the selection. However, if there is only one selection in any selection mode, Less will deselect it.
Face Step
With Face Step on, each use of the tool will affect the size of the selection on a face by face basis. When deactivated, it will be based on either vertices or edges depending on which Selection Mode is active.
Select Next/Previous Active
Reference
Mode:
Edit Mode
Menu:
Select ‣ Select More/Less ‣ Next Active
Shortcut:
Shift-Ctrl-NumpadPlus
Menu:
Select ‣ Select More/Less ‣ Previous Active
Shortcut:
Shift-Ctrl-NumpadMinus
Next Active
This uses selection history to select the next vertex, edge, or face based on the surrounding topology. Which means that, it will derive the next selection from the previous two selections.
Previous Active
Only the last selected element will be removed.