istream_ptr

    OpenVMS usage address
    type          longword (unsigned)
    access        read/write
    mechanism     by reference
    Address of the pointer that points to a copy of the i-stream in a
    local buffer.

 buffer

    OpenVMS usage char_string
    type          character string
    access        write only
    mechanism     by reference
    Address of a string buffer into which to store the output
    assembler string.

 buflen

    OpenVMS usage longword_unsigned
    type          longword (unsigned)
    access        read only
    mechanism     by value
    Maximum size of the string buffer.

 template_buffer

    OpenVMS usage char_string
    type          character string
    access        write only
    mechanism     by reference
    (Integrity servers only.) Address of a string buffer into which
    to store the template string.

 template_buflen

    OpenVMS usage longword_unsigned
    type          longword (unsigned)
    access        read only
    mechanism     by value
    (Integrity servers only.) Maximum size of the template buffer.