title: <MailDefinition> and <%%> placeholders
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  <p><em>BodyFileName</em> attribute references disk file containing mail's body text. If we put placeholders <code>&lt;% UserName %&gt;</code> and <code>&lt;% Password %&gt;</code>in the body text file ( <em>RegistrationMail.txt</em> ), then <em>CreateUserWizard</em> will automatically replace these placeholders with username and password of a created user.</p>
  
  <p>A) If I wanted to create a control that would also be able to replace placeholders <code>&lt;% %&gt;</code> in a file with some text, how would I do that? </p>
  
  <p>B) Can I also write into these placeholders from code behind file? Meaning, is there some method which when called, writes specific text into placeholder contained inside some txt file?</p>
  
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  <p>thanx</p>