Reference > Keyboard shortcuts >
Selection

Action | Windows and Linux | Mac OS X | Results
--- | --- | --- | ---
Select All | Ctrl + A | Command + A | Selects all models in the 3D View.
Invert Selection | Ctrl + Shift + I | Command + Shift + I | Selects any un-selected faces and deselects any existing selected faces in the 3D View.
Deselect All | Ctrl + D | Command + D | Clears the current selection.
Grow Selection | Ctrl + ] | Command + ] | Selects faces adjacent to the currently selected faces. Requires at least one face to be pre-selected.
Select Level | Shift + A | Shift + A | Selects all visible faces belonging to the subdivision level of the active face (the face under the cursor).
Select Face | Shift + S | Shift + S | Selects the active face (the face under the center of the cursor when the hotkey is pressed).
Drag Rectangle | Left + middle-drag | Left + middle-drag | Choose a selection tool from the Select/Move Tools tray then left + middle-drag around the item. To make this mode the default for a selection tool, set the Selection Mode property to Rectangle.
Select tools from left to right on the current tool tray. | 0 - 9 | 0 - 9 | Press the 0 through 9 keys to select the first 9 tools on a tool tray. For more information, see Trays.