code: func (p *humanReadable) Row(args ...interface{}) {
  	for i, arg := range args {
  		if i > 0 {
  			fmt.Fprint(p, "\t")
  		}
  		switch a := arg.(type) {
  		case common.State:
  			fmt.Fprint(p, a.Name())
  		default:
  			fmt.Fprint(p, arg)
  		}
  	}
  	fmt.Fprint(p, "\n")
  }
docs: // Row prints one row of space-separated columns.
  // Aligns mixed-length columns regardless of how many spaces it takes.