text: 
    /*
     * Automatically compute the variance
     * based on the standard deviation that is
     * provided in input '_std'
     */
    
    function setVar( tagid ) {
      let s = document.getElementById( tagid + "_std" ).value; 
      document.getElementById( tagid + "_var" ).value = Math.pow(s,2).toFixed(precision);
    }    
    
  