		</tr>
				<tr>
					<td><b>corinth</b></td>
					<td>Set to 1 to allow the route to go through the Corinth channel.</td>
					<td>0, 1</td>
					<td>0</td>
				</tr>
				<tr>
					<td><b>northwest</b></td>
					<td>Set to 1 to allow the route to go through the Northwest passage.</td>
					<td>0, 1</td>
					<td>0</td>
				</tr>
				<tr>
					<td><b>northeast</b></td>
					<td>Set to 1 to allow the route to go through the Northeast passage.</td>
					<td>0, 1</td>
					<td>0</td>
				</tr