title: how can I refer dword value at some label? not address of label but value
body: <p>how can I refer dword value at label?</p>
  
  <pre><code>here:
  dd 50
  
  times dword [here] db 0
  </code></pre>
  
  <p>there's no such syntax but I wrote for understanding.</p>
  
  <p>I tried to repeat <code>db 0</code> for 50 times</p>