title: What does it mean by $scope=global in ATG..?
body: <p>According to the documentation,</p>
  
  <blockquote>
    <p>Global: Component is shared among all users. 
    Session: <strong>Separate instances</strong> of the component are provided to each user.</p>
  </blockquote>
  
  <p>Is that means, for global component, there is only one instance for the whole nucleus system..
  If this is true, how does it valid for components like ‘/atg/dynamo/transaction/TransactionManager’ and most of the droplets..?
  Because those components are used by several users at a single moment</p>
  
  <p>Edited:</p>
  
  <p>I understood the ‘TransactionManager’ behavior. According to the definition there should be single transaction manager, and he should keep transaction objects per each transaction.
  But my question is still valid for droplets like, foreach, switch, etc (most of them are globally scoped)
  If there is only one instance of corresponding class for the whole nucleus system, isn't it having bad effects on performance?</p>