/sys$common/syshlp/helplib.hlb MACRO, /MIGRATION, Qualifiers, /RETRY_COUNT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /RETRY_COUNT=count

    Specifies to the compiler the number of times the following
    operations should be performed in generated code:

    -  Retries of operations performed in source by a VAX interlocked
       instruction

    -  Retries of atomic or granular updates if the /PRESERVE
       qualifier or .PRESERVE directive is present

    If the /RETRY_COUNT qualifier is not present, the compiler
    generates code that performs an infinite number of retries of
    these operations.