1. 
   Task Control Block
   (architecture) An MVS control block used to communicate information about tasks within an address space that are connected to an MVS subsystem such as MQSeries for MVS/ESA or CICS. FAQ (http://www-4.ibm.com/software/ts/mqseries/library/manuals/csqfao/CSQFAO22.HTM). (2000-12-30)
   Found op http://foldoc.org/Task+Control+Block
   
   
2. 
   Task Control Block
   The Task Control Block (TCB) is an instance of a Process control block in an IBM System/360 architecture and successors operating system environment. Because of the complexities of the OS/360 and successors control program dispatcher, a TCB does not strictly perform all the functions of a Process c...
   Found op http://en.wikipedia.org/wiki/Task_Control_Block
   
   

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