anchor.diff:   meters.
   
   |:z
  -
   |The offset along the fixture Z axis, in meters, from the geometric
    center of the fixture (the point at which Afterglow is told the
    fixture is located when patching the fixture) and the geometric
  
positive.code: should be in that head's list.
  
  |:x
  
  |The offset along the fixture X axis, in meters, from the geometric
   center of the fixture (the point at which Afterglow is told the
   fixture is located when patching the fixture) and the geometric
  
negative.code:  meters.
  
  |:y
  |The offset along the fixture Y axis, in meters, from the geometric
   center of the fixture (the point at which Afterglow is told the
   fixture is located when patching the fixture) and the geometric
  