title: How to create a scrollable box with blessed/nodejs
body: <p>I cannot figure out, how to create a scrollable box with blessed.</p>
  
  <p><a href="https://github.com/chjj/blessed" rel="nofollow">https://github.com/chjj/blessed</a></p>
  
  <p>According to the docs, it should be like this:</p>
  
  <pre><code>"use strict";
  
  const blessed = require('blessed');
  
  const screen = blessed.screen({
      smartCSR: true
  });
  
  let box = blessed.box({
      top: 0,
      left: 0,
      width: '80%',
      height: '80%',
      style: {
          bg: 'red'
      },
      alwaysScroll:true,
      scrollable: true,
      scrollbar: true
  });
  
  screen.append(box);
  screen.render();
  
  for (let i = 0; i &lt; 200; i++) {
      box.insertLine(0, 'texting ' + i);
      box.screen.render();
  }
  </code></pre>
  
  <p>The box window shows, it gets filled, but no scrollbar. What am i missing?</p>