docs: function moveRender (type) {
      var method = type ? 'down' : 'up'
      
      ui
        .left(lastLen + 2)
        .up(count - cur)
        .write('  ')
      
      // Each time move to right-bottom.
      ui[method]()
        .left(2)
        .write(chalk.blue(pointer))
        .left(2)
        .down(count - (type ? ++cur : --cur))
        .right(lastLen + 2)
    }