anchor.diff:          1
         {math mod value -7 by 2}
           1
  -        
  +      
         {5 | mod 13}
           5
         {-5 | mod 13}
  
positive.code:         -5
        {5 | mod -13}
          -8
   
    <h3>POW</h3>
    
      {math pow value 2 exp 8}
  
negative.code: 
    <strong>_</strong> reads 'read', as in read-only
  
    <strong>$</strong> reads 'space variable', or 'spacevar'
  
  <h4>Combo elements:</h4>
  
    <strong>&gt;@</strong> reads 'put port'
  
    <strong>&gt;$</strong> reads 'put spacevar'
  
    <strong>__</strong> reads 'read last'
  
  