You can use the following keyboard shortcuts for performing general actions in MotionBuilder.
| Action | keyboard Shortcut | 
|---|---|
| Undo last action | Ctrl-Z | 
| Redo last action | Ctrl-Y | 
| Cut | Ctrl-X | 
| Copy | Ctrl-C | 
| Paste | Ctrl-V | 
| Paste Special | Ctrl-B | 
| Delete selection | Delete | 
| New scene | Ctrl-N | 
| Open scene | Ctrl-O | 
| Save scene | Ctrl-S | 
| Pan window | (Middle-drag) Shift-drag | 
| Zoom in/out | (Alt-Ctrl-middle-drag) Ctrl-drag | 
| Select a range of assets in the Navigator | Shift-click | 
| Position Time cursor | Ctrl-Shift-click | 
| Drag and drop asset | Alt-drag |