LASS="keyword">namespace</SPAN> std;
    
    <SPAN CLASS="comment">// Close each input sequence, in reverse order:</SPAN>
    boost::iostreams::close(d,<SPAN STYLE="visibility:hidden"><SUB>n-1</SUB>, buf<SUB>n-1</SUB></SPAN> ios_base::in);
    boost::iostreams::close(f<SUB>n-1</SUB>, buf<SUB>n</SUB>,<SPAN STYLE="visibility:hidden"><SUB>-1</SUB></SPAN> ios_base::in);
    boost::iostreams::close(f<SUB>n-2</SUB>, buf<SUB>n-1</SUB>, ios_base::in);
    <SPAN CLASS="omitted">...</SPAN>
    boost::iostreams::clos