<!-- TODO: integrate these into kitchen sink and support in the editor -->
<!-- Use Case 1: 2 Panel figure -->
<fig-group>
  <fig id="fig1a">
    <label>Figure 1A</label>
    <caption>
      <title>First panel</title>
      <p>First panel caption</p>
    </caption>
    <graphic mime-subtype="jpeg" mimetype="image" xlink:href="fig1a.jpg" />
  </fig>
  <fig id="fig1b">
    <label>Figure 1B</label>
    <caption>
      <title>Second panel</title>
      <p>Second panel caption</p>
    </caption>
    <graphic mime-subtype="jpeg" mimetype="image" xlink:href="fig1b.jpg" />
  </fig>
</fig-group>

<!-- Use Case 2: 1 Main Figure + 1 Supplement -->
<fig-group>
  <fig id="fig1">
    <label>Figure 1</label>
    <caption id="fig1-caption">
      <title>Main figure title</title>
      <p>Main figure title</p>
    </caption>
    <graphic mime-subtype="jpeg" mimetype="image" xlink:href="fig1.jpg" />
  </fig>
  <fig id="fig1s1" specific-use="supplement">
    <label>Figure 1–figure supplement 1</label>
    <caption id="fig1-caption">
      <title>First figure supplement title</title>
      <p>First figure supplement caption</p>
    </caption>
    <graphic mime-subtype="jpeg" mimetype="image" xlink:href="fig1s1.jpg" />
  </fig>
</fig-group>

Add JATS proposal for figure groups.
Add JATS proposal for figure groups.