title: What is the meaning of ${} in powershell?
body: <p>I have a script where function parameters are expressed like this:</p>
  
  <pre><code>param(
     ${param1},
     ${param2},
     ${param3}
  )
  </code></pre>
  
  <p>What does it mean? I have been unable to find documentation on this.</p>
  
  <p>What's the point of writing parameters that way instead of the more usual</p>
  
  <pre><code>param(
      $param1,
      $param2,
      $param3
  )
  </code></pre>
  
  <p>?</p>