anchor.diff:  === array Parameters
   
   * `numeric` | `array` ...
  +
  +=== array Returns
  +
  +array
   
   === array Syntax
   
  
positive.code: 
  integer
  
  === length syntax
  
  length(numericArray)
  
  
negative.code: 
  number
  
  === distance Syntax
  
  distance(numericArray1, numuericArray2))
  
  