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

 invalid selection of display_name display; wrong display kind

    Facility: DEBUG, VMS Debugger

    Explanation: Some attributes can only be placed on certain types
    of displays. For example, the SOURCE attribute can only be placed
    on source displays. The attribute you specified cannot be placed
    on the display you specified.

    User Action: See the debugger documentation of the SELECT command
    for details on which attributes can be placed on which displays.
    Specify attributes which are compatible with the display kind.