anchor.diff:  *  A Spatial can be loaded, transformed, and saved.
   *  There are two types of Spatials: Nodes and Geometries.
   
  -[cols="3", options="header"]
  +[cols="10,45,45", options="header"]
   |===
   
   <a|  
  
positive.code: |===
  
  a| Rotation turns Spatials 
  a| X-axis 
  a| Y-axis 
  a| Z-axis 
  
  a|3-D rotation is a bit tricky (<<jme3/rotate#,learn details here>>). In short: You can rotate around three axes: Pitch, yaw, and roll. You can specify angles in degrees by multiplying the degrees value with `FastMath.DEG_TO_RAD`. +
  To roll an object 180° around the z axis: 
  
negative.code:   new Quaternion().fromAngleAxis(180*FastMath.DEG_TO_RAD, new Vector3f(1,0,0)));
  ----
  
  a|nodding your head
  a|shaking your head
  a|cocking your head
  
  |===
  
  