title: How to get value from a list in Tcl?
body: <p>I have a list in Tcl as:</p>
  
  <pre><code>set list1 {0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9}
  </code></pre>
  
  <p>then how could I get the element based on the index of list? for example:</p>
  
  <p>I want to get the second element of this list? or the sixth one of this list?</p>