Edit menu hotkeys
 
 
 

Action

Windows and Linux

Mac OS X

Results

Undo Ctrl + Z Command + Z Undoes your last action.
Redo Shift + Z Shift + Z Reverses the last Undo operation.
Delete Delete Delete Deletes the active model.
Lock Mesh Shift + F Shift + F Locks the active model.
Unlock Mesh Ctrl + Shift + F Ctrl + Shift + F Unlocks all locked models.
Freeze Selected Shift + M Shift + M Freezes the vertices on all selected models.
Invert Freeze Shift + I Shift + I Freezes any vertices not frozen and unfreezes all frozen vertices.
Unfreeze All Shift + U Shift + U Unfreezes all frozen vertices.