/sys$common/syshlp/DBG$HELP.HLB  —  DEBUG  Messages  ILLSUBLEN
 substring length larger than 32K not supported

    Facility: DEBUG, VMS Debugger

    Explanation: The calculated length of a substring in the
    expression is larger than can be handled by the Debugger.

    User Action: Do not use a substring with a length greater than
    32K in an expression to be evaluated by the Debugger.
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