class="classname">Db.delete()</code> methods on Queue or Recno databases,
    and handling the <a href="../programmer_reference/program_errorret.html#program_errorret.DB_KEYEMPTY" class="olink">DB_KEYEMPTY</a> exception specially, should be modified
    to check for a return value of <a href="../programmer_reference/program_errorret.html#program_errorret.DB_KEYEMPTY" class="olink">DB_KEYEMPTY</a> instead.
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