title: Echo off but messages are displayed
body: <p>I turned off echo in bat file.</p>
  
  <pre><code>@echo off
  </code></pre>
  
  <p>then I do something like this</p>
  
  <pre><code>...
  echo %INSTALL_PATH%
  if exist %INSTALL_PATH%(
  echo 222
  ...
  )
  </code></pre>
  
  <p>and I get:</p>
  
  <blockquote>
    <p>The system cannot find the path specified.</p>
  </blockquote>
  
  <p>message between those two echos.</p>
  
  <p>What can be the reason of this message and why message ignores echo off?</p>