First, create an HTML element with the initial content:
<p>Here goes the initial content of the editor.</p>
Then use the following code to run the editor:
ClassicEditor
.create( document.querySelector( '#editor' ) )
.catch( error => {
console.error( error );
} );
Finally, let your artistic self shine:
________________
/ \
| How about moo? | ^__^
\________________/ (oo)\_______
\ (__)\ )\/\
||----w |
|| ||