Library /sys$common/syshlp/dbg$help.hlb DEBUG, Messages, EDITREVVER  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 editing a revised version of the original source file

    Facility: DEBUG, VMS Debugger

    Explanation: The original source file has been revised since the
    start of the debug session. This message indicates that future
    source line may not correspond to the ones used to compile this
    module.

    User Action: Use SET SOURCE command to point to the original
    source file if possible and retry operation.