<?xml version="1.0" encoding="UTF-8"?>
<tube name="test">
  <lines>
    <line id="A" name="A" color="red"/>
    <line id="B" name="B" color="#FFFF00"/>
  </lines>
  <stations>
    <station id="A1" name="A1" line="A:2"     link="A2"   />
    <station id="A2" name="A2" line="A:1"     link="A1,A3"/>
    <station id="A3" name="A3" line="A:3,B:3" link="A2,B1"/>
    <station id="B1" name="B1" line="A:4,B:1" link="A3,B2"/>
    <station id="B2" name="B2" line="B:2"     link="B1"   />
  </stations>
</tube>