position	The position of the handle.
rotation	The rotation of the handle. this defines the space along.
size	The size of the handle.
capFunc	The function to use for drawing the handle, eg, Handles.RectangleCap Note: Use HandleUtility.GetHandleSize where you might want to have constant screen-sized handles.

Make an unconstrained movement handle.

This can move freely in all directions. Hold down CMD to snap, CMD-SHIFT to raysnap agains colliders in the scene.

Free Move handle on the Scene View.

	// Create a simple move handle (Twice as big) on the 
	// target object that lets you freely move the Object
	// Without having the "Move" button selected
	
	@CustomEditor (FreeMove)
	class FreeMoveHandleJS extends Editor {
		function OnSceneGUI () {
	        target.pos = Handles.FreeMoveHandle(target.pos, 
	        				Quaternion.identity,
	        				2.0,
	        				Vector3.zero, 
	        				Handles.DrawRectangle);
	        if (GUI.changed)
	            EditorUtility.SetDirty (target);
	    }
	}

And the script attached to this handle:

	@script ExecuteInEditMode()
	
	var pos : Vector3 = Vector3(0,0,0);
	
	function Update () {
		transform.position = pos;
	}