VMS Help LINK, Qualifiers, /BPAGE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /BPAGE[=page-size-indicator]

    Specifies the page size the linker should use when it creates the
    image sections that make up an image.

    The page-size-indicatior specifies a page size as the power of 2
    required to create a page that size. For example, to get an 8KB
    page size, specify the value 13 because 2**13 equals 8K. The
    following table lists the page sizes supported by the linker with
    the defaults:

            Page
    Value   Size      Defaults

    9       512       Default value for VAX links when the /BPAGE
            bytes     qualifier is not specified.
    13      8 KB      Default value for VAX links when the /BPAGE
                      qualifier is specified without a value.
    14      16 KB     -
    15      32 KB     -
    16      64 KB     Default value for Alpha links when /BPAGE is
                      not specified or when the /BPAGE qualifier is
                      specified without a value.