Topic map documents are very simple: there are only 19 XTM elements. So, when you finish this section, you will know 50 percent of what you need to know to start topic mapping. In this section, you'll learn about the following elements (listed alphabetically):
<baseName> <baseNameString> <occurrence> <resourceRef> <scope> <subjectIdentity> <subjectIndicatorRef> <topic> <topicRef>
Let's create a topic element and give it an ID in case we need to identify it later:
(I lied about what you need to know about XML. XML elements also have attributes, like the -id- attribute in the example above.)
PITFALL: An ID must be a string that is unique ...