.xml

<?xml version="1.0" encoding="UTF-8"?>
<topic>
    <node>
        <name>Lorem Ipsum</name>
        <id>0</id>
        <description>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</description>
        <property>Lorem</property>
    </node>
    <node>
        <name>Lorem Ipsum</name>
        <id>1</id>
        <description>Lorem ipsum dolor sit amet, consectetur adipiscing elit></description>
        <property>Lorem</property>
        </node>
    <node>
        <name>Lorem Ipsum</name>
        <id>2</id>
        <description>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</description>
        <property>Lorem</property>
    </node>
</topic>

Extensible Markup Language is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. (Source: wikipedia)

.xml