[<A HREF="TotalPreOrder.ps">PostScript</A>]

<PRE>
TotalPreOrder (&lt;=, T): <b>trait</b>
  <b>includes</b> <A HREF="PreOrder.html">PreOrder</A>
  <b>asserts</b> <b>forall</b> x, y: T
    x &lt;= y \/ y &lt;= x
</PRE>

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