title: Variable scope for TCL global
body: <p>If I set a local variable to refer to a global variable in a proc, can sub-proc's also access the variable?</p>
  
  <pre><code>proc function1 {} {
      global CAR
  
      function2
  }
  
  proc function2 {} {
      echo ${CAR}
  }
  </code></pre>