`Tooltip` simply displays a little overlay message on a component.  It's best to not use this too
much as it can clutter your UI significantly.  Try to find a way to not need the tooltip.

You can put a tooltip on a word using:

```
<word>tooltip word test<tooltip>I hover</tooltip></word>
```

Which works like this:

<word>tooltip word test<tooltip>I hover</tooltip></word>
