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Accessing Permanent Data Structures

As explained in section 2.3.2, permanent data structures, such as Run Headers, are held in division 2 of the Q store where they are available to any code that needs them. To access the top level MAST bank used the link LMAST_PERM. For example, to pick up the link to the RHDR bank:- 

    lrhdr = lq(lmast_perm - kmast_rhdr)


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