title: How do I scroll using hotkeys?
body: <p>I'm trying to recreate this from sublime text:</p>
  
  <pre><code>{ "keys": ["ctrl+up"], "command": "scroll_lines", "args": {"amount": 1.0 } },
  { "keys": ["ctrl+down"], "command": "scroll_lines", "args": {"amount": -1.0 } },
  </code></pre>