# Tooltip
Tooltips are floating labels that briefly explain the function of a user interface element. They must be specified inside the `overlay` prop of an activator component. Currently, activator components are `Button`, `Link`, and `Pressable`.

The library automatically applies the [WAI-ARIA Tooltip Widget pattern](https://www.w3.org/WAI/ARIA/apg/patterns/tooltip/) to both the activator and the tooltip content. Expect screen readers to read the tooltip content when the user focuses the activator.
### Basic Tooltip

```tsx
import {
  reactExtension,
  Icon,
  Pressable,
  Tooltip,
} from '@shopify/ui-extensions-react/checkout';

export default reactExtension(
  'purchase.checkout.block.render',
  () => <Extension />,
);

function Extension() {
  return (
    <Pressable
      overlay={
        <Tooltip>
          In case we need to contact you about
          your order
        </Tooltip>
      }
    >
      <Icon source="questionFill" />
    </Pressable>
  );
}

```

```js
import {
  extension,
  Icon,
  Pressable,
  Tooltip,
} from '@shopify/ui-extensions/checkout';

export default extension('purchase.checkout.block.render', (root) => {
  const tooltipFragment = root.createFragment();
  const tooltip = root.createComponent(
    Tooltip,
    {},
    'In case we need to contact you about your order',
  );
  tooltipFragment.appendChild(tooltip);
  const pressable = root.createComponent(
    Pressable,
    {overlay: tooltipFragment},
    [root.createComponent(Icon, {source: 'questionFill'})],
  );

  root.appendChild(pressable);
});

```


## TooltipProps

### TooltipProps

### id
A unique identifier for the component.