The Plato.PrettyPrint module makes code blocks within all your Plato content prettier by automatically adding syntax highlighting and line numbering for code blocks.
You can see an example of this below...
Visit your Plato dashboard and navigate to "Features > Manage". Within the search field type "prettyprint". If installed you will see the Plato.PrettyPrint module within the list of available features.
If this feature is not already enabled the button to the right of the Plato.PrettyPrint feature will read "Enable". Click this button to enable Plato.PrettyPrint. If the feature is already enabled the button to the right will read "Disable".