Keyboard and command-line modifiers

Specify a distance and angle

	Type a number at the command prompt. Type coordinates in the format x,y,z to use construction plane coordinates. Type 0 to enter 0,0,0 automatically. Type wx,y,z to use world coordinates. Type any number using any unit system to specify a distance. Type an angle bracket < before a number using any unit system to specify an angle. Type @ or r before any number to specify coordinates relative to the previous point.
	Pick two points to show a distance value.
	For accuracy, use object snaps to snap to points on existing objects.

To pick a location

Click anywhere in a viewport. For accuracy use Coordinate entry Object snaps SmartTrack Elevator mode

Ortho (direction lock)

• Press the Shift key to lock the cursor to 90-degree increments.

Specify a command-line option

	Click the option name on the command line.
	Or
	Type the letter underlined in the desired option list on the command line.

Alt key

• While dragging an object or gumball widget, tap to Copy the object.
• Starts a combo selection if an object is not being dragged and an object snap is not active.
• Temporarily enables disabled object snaps.
• While dragging, press to suspend object snaps.
• Suspends Polyline, Curve, and InterpCrv autoclose.
• Makes arrow keys nudge selected objects.

Ctrl key

• Modifier for view navigation.
• Initiate elevator mode.
• Capture and release SmartPoints.
• Relocate the gumball widget.
• Open the URL attached in an object.

Esc key

• Cancels a command.
• Clears the command prompt.
• Deselects all selected objects.
• Turns off control and edit point display.
• Clears the selection menu.
• Restores the Rhino window from FullScreen mode.

Shift key

• Toggles Ortho mode
• Constrains view and camera rotation to horizontal or vertical
• Controls symmetry in the BlendSrf command

Enter

To accept command-line input, do one of the following:

• Press the Enter key
• Press the Spacebar.
• Click the right mouse button .

To select objects

• Click the object.
• Drag right to left for a crossing selection.
  
• Drag left to right for a window selection.
  
• When multiple objects can be selected, press Enter when you are done selecting.

To select sub-object parts with a mouse

For many commands, you can select sub-parts of objects or specified object types to allow you to restrict selection in a tight area.

• Ctrl (CMD) + Shift + Left mouse click, window, or crossing.