code: public void setScope(String scope)
      {
          ExtendedInfo info = getInfo(scope);
          if (info != null)
              info._scope = scope;
      }
docs: Set the target scope for this anchor's URI.  Any page flow that handles the URI will be made active within the
  given scope.  Scopes allow multiple page flows to be active within the same user session; page flows in different
  scopes do not in general interact with each other.  This attribute is commonly used in conjunction with the
  <code>target</code> attribute to invoke a new page flow in a separate window.
  @param scope a String that identifies the scope in which the target page flow will be made active.
  @netui:attribute required="false" rtexprvalue="true"
  description="Set the target scope for this anchor's URI."