anchor.diff:    new Quaternion().fromAngleAxis(180*FastMath.DEG_TO_RAD, new Vector3f(1,0,0)));
   ----
   
  -a|pitch = nodding your head
  -a|yaw = shaking your head
  -a|roll = cocking your head
  +a|nodding your head
  +a|shaking your head
  +a|cocking your head
   
   |===
   
  
positive.code: *  A Spatial can be loaded, transformed, and saved.
  *  There are two types of Spatials: Nodes and Geometries.
  
  [cols="3", options="header"]
  |===
  
  <a|  
  
negative.code: |===
  
  a| Rotation turns Spatials 
  a| X-axis (Pitch)
  a| Y-axis (Yaw)
  a| Z-axis (Roll)
  
  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: 
  