The entire content in this paragraph is editable. Feel free to explore and change the contents to your requirements. Simply start typing at the end, start, or in the middle.
You could also select a portion, or all of it, and rewrite it all.
You can use Ctrl+Z to undo any mistakes you made while typing.
Also, you can click on the icon on the top left, to speak, and add to the existing content. Keep in mind, though, that the content may not be formatted by default, and will need formatting.
Have fun!