CICS的TOR,AOR,FOR概念

CICS当中TOR，AOR,FOR还有其它*OR什么意思？

• TOR 是TERMINAL OWNING REGION,TOR上只定义TERMINAL，在TOR上定义PCT,REMOTE到AOR。当交易进入TOR后会被路由到对应的AOR去执行。
• AOR 是APPLICATION OWNING REGION，AOR上跑交易和应用程序。
• FOR 是FILE OWNING REGION
  网上搜到老外的解释:

  Tor is where the terminals are defined, Aor is where the applications are defined and FOR where the files are defined.
  Generally, TORs are the regions ...