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The default ordering of data for any find operation. Possible values include:

$order = "field"
$order = "Model.field";
$order = "Model.field asc";
$order = "Model.field ASC";
$order = "Model.field DESC";
$order = array("Model.field" => "asc", "Model.field2" => "DESC");

1. $order = "field"
2. $order = "Model.field";
3. $order = "Model.field asc";
4. $order = "Model.field ASC";
5. $order = "Model.field DESC";
6. $order = array("Model.field" => "asc", "Model.field2" => "DESC");