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

       /SHARE (default)
       /NOSHARE

    Qualifies /INTO. Use with /INTO and one of the following
    qualifiers:

       /BRANCH
       /CALL
       /INSTRUCTION
       /INSTRUCTION=(opcode[, . . . ]) (VAX only)
       /LINE
       /VECTOR_INSTRUCTION (VAX only)

    The /SHARE qualifier permits the debugger to break within
    shareable image routines as well as other routines. The /NOSHARE
    qualifier specifies that breakpoints not be set within shareable
    images.