title: Why I can use node.js without settiing environment variable path on windows?
body: <p>I use windows10.<br>
  My node.js's path is <code>C:\Program Files\nodejs\node.exe</code> and I can use <code>node</code> command.  </p>
  
  <p>But I haven't set my environment variable path.<br>
  It does not mean just that I have not set it myself. I checked the user environment variables and the system environment variables but could not find them. (The path of npm was in the user environment variable.)  </p>
  
  <p>Why can I use <code>node</code> command without setting path?</p>