title: How to trim any character (or a substring) from a string?
body: <p>I use C# basically. There I can do: </p>
  
  <pre><code>string trimmed = str.Trim('\t');
  </code></pre>
  
  <p>to trim tabulation from the string <code>str</code> and return the result to <code>trimmed</code>.</p>
  
  <p>In delphi7 I found only <code>Trim</code>, that trims spaces. </p>
  
  <p>How can I achieve the same functionality?</p>