title: Inno Setup Compiler: How to edit INI file and replace a value with {app} constant
body: <p>I have a INI file which contains <code>c:/wamp</code> many times.</p>
  <p>How can I replace this text with the <code>{app}</code> extended/chosen constant value?</p>
  <p>I know now how to replace a single value:</p>
  <pre><code>[INI]
  Filename: &quot;{app}\wampmanager.conf&quot;; Section: &quot;main&quot;; Key: &quot;installDir&quot;; String: &quot;&quot;&quot;{app}&quot;&quot;&quot;
  </code></pre>
  <p>I am reading from <a href="http://www.jrsoftware.org/ishelp/index.php?topic=scriptinstall" rel="nofollow noreferrer">here</a></p>