NF for each dataset, as above.</p></li>
<li><p>Sort the base64-encoded UNFs in POSIX locale order.</p></li>
<li>
<p>Apply the UNF algorithm to the sorted, base64-encoded UNFs, using a truncation value as large as the original, treating the UNFs as character. For UNF versions &gt;= 5, the algorithm is applied to the truncated UNFs.</p>
<p>Note: Multiple datasets need to be combined based on UNFs calculated with the same version of the algorithm. Thus when calculating a study-level UNF, dataset-level UNFs nee