code: func format(s string, codes interface{}) string {
  	var seq string
  
  	switch v := codes.(type) {
  
  	case string:
  		seq = v
  	case []int:
  		seq = makeSequence(v)
  	default:
  		return s
  	}
  
  	if len(seq) == 0 {
  		return s
  	}
  	return startFormat(seq) + s + stopFormat()
  }
docs: // Adding ANSI escape  sequences before and after string