O on whatever data
	  types you're using.</span>”</span>
	</p><p>
	  This is a Bad Thing, because while
	  the compiler would probably be just fine with it, other humans
	  are going to be confused.  The overloaded bitshift operators
	  have a well-defined meaning (formatting), and this breaks it.
	</p></li><li class="listitem"><p>
	  <span class="quote">“<span class="quote">Build the file structure in memory, then
	  <code class="code">mmap()</code> the file and copy the
	  structure.
	</span>”</span