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RTL Routines, STR$, STR$POSITION, Returns
 *Conan The Librarian 

    OpenVMS usage:longword_unsigned
    type:         longword (unsigned)
    access:       write only
    mechanism:    by value

    Relative position of the first character of the substring. Zero
    is the value returned if STR$POSITION did not find the substring.

    On Alpha systems, if the relative position of the substring can
    exceed 2**32-1, assign the return value to a quadword to ensure
    that you retrieve the correct relative position.
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