What is library <High.Level>.CAX1HELP used for in ACF2?

Document ID : KB000129180
Last Modified Date : 13/03/2019
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Introduction:
This document states how library <High.Level>.CAX1HELP is used in ACF2. 
Question:
What is library <High.Level>.CAX1HELP used for in ACF2?
Environment:
z/OS 1.13 & higher.
Answer:
The CAX1HELP members are displayed when the Help command is issued in ACF mode. For example:

1) If you enter a Help ACFNRULE command in ACF mode:

   ACF
   HELP ACFNRULE

   Your <High.Level>.CAX1HELP member ACSNRULE should appear:

     FUNCTION -                                                        
                                                                    
       THE ACFNRULE COMMAND IS USED TO DECOMPILE, MODIFY, COMPILE, AND
       THEN STORE A SET OF ACCESS OR GENERALIZED RESOURCE RULES.       
                                                                    
     - NOTE THE FOLLOWING:                                             
                                                                    
         WHEN PERFORMING A DELETE, BE CAREFUL. IF DEL(A) IS CODED,     
         ANY LINE THAT CONTAINS AN 'A' IS DELETED.                     
         ACFNRULE CAN MODIFY ONE RULESET PER EXECUTION.                

2) Or, if you're working with Digital Certificates in ACF2's Profile mode:

   ACF
   SET PROFILE(CSFKEYS) DIV(ICSF)

   Entering the HELP command brings up <High.Level>.CAX1HELP member ACSIPXCF:

   ACF
   HELP

    (INFO-STORAGE MODE)                             
                                                 
     FOR INFORMATION ON THE HELP SUBCOMMANDS, ENTER:
                                                 
         HELP                                       
                                                 
     CSFKEYS OR XCSFKEY PROFILE RECORD.