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The <em>Public service</em> wants you to complete the rail network running through the following cities:<br>
<em>{cy2}</em> {co2}<br>
<em>{cy1}</em> {co1}<br>
<em>{cy3}</em> {co3}<br>
<em>{cy4}</em> {co4}.<br>
<br>
{tx8}<br>
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You can activate the <em>Underground</em> mode by pressing <em>[shift] + U</em> or by going to the <em>Display</em> settings.<br>
You can activate the <em>Sliced underground</em> mode by pressing <em>[ctrl] + U</em> or by going to the <em>Display</em> settings.<br>
While in <em>Sliced underground</em> mode you can:<br>
<em>[1]</em> Go one level deeper by pressing <em>[home]</em>.<br>
<em>[2]</em> Go one level higher by pressing <em>[end]</em>.<br>
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<st>Note:</st> When building complicated structures on several layers, it is recommended to use the <em>sliced underground</em> mode.<br>

