shows a toolbar element using the `aria-activedescendant` property with a `tabindex` attribute set to zero:

```
<div role="toolbar" aria-label="Toolbar Widget" tabindex="0" aria-activedescendant="button2" id="tb3" onkeypress="keyEvent();">
    <div id="button1" role="button1">tool 1</div>
    <div id="button2" role="button2">tool 2</div>
</div>
```

</script></mark-down>
<!-- End main panel -->
                <!-- This is where the rule id is injected -->
                <div id="ruleInfo"></div>
        