Appendices
Capture the appendix using an app element within an app-group.
Each app must have an id with a unique value and a title. Capture a separate app for each appendix.
<app-group> <app id="app1"> <title>Appendix A</title> <sec> <title>The Bipolar Seesaw</title> <p>The evidence for the antiphasing of the millennial-duration climate changes occurring on the Antarctic continent ...</p> ... </sec> </app> </app-group>