 character vector if collapse is not <code>NULL</code>.
A list of character vectors otherwise.</p>
    </div>
    <div id="see-also">
    <h2>See also</h2>
    <div class="dont-index"><p>Other op-misc: 
<code><a href="seq_disambiguate_IUPAC.html">seq_disambiguate_IUPAC</a>()</code>,
<code><a href="seq_nchar.html">seq_nchar</a>()</code>,
<code><a href="seq_nseq.html">seq_nseq</a>()</code>,
<code><a href="seq_stat_gc.html">seq_stat_gc</a>()</code>,
<code><a href="seq_stat_prop.html">seq_stat_prop</a>()</code>