Tabs are used to separate content into different panes.
Example:
<ibm-tabs selected="0">
<ibm-tab>Item one</ibm-tab>
<ibm-tab>Item two</ibm-tab>
<ibm-tab>Item three</ibm-tab>
</ibm-tabs>
IronSelectableBehavior and IronMultiSelectableBehavior, which are used by ibm-tabs, introduce multiple breaking changes. Please see the README for those behaviors for more detail.