A minor glitch: it looks like the plugin added unwanted spaces around some inline tags (like <em>, <strong> and <span>, but not around <a>).
After adding an ID to every paragraph, I got:
Code:
<h2><span>MACCHINE A VAPORE</span></h2>
Code:
<h2> <span>MACCHINE A VAPORE</span> </h2>
Code:
… che chiaṃ “<strong>astri medicei</strong>”, in onore di <strong>Cosimo II de’ Medici</strong>.</p>
Code:
… che chiaṃ “ <strong>astri medicei</strong> ”, in onore di <strong>Cosimo II de’ Medici</strong> .</p>
The code is easily fixable, and I spent less time struggling with the plugin than manually adding the IDs anyway