Free Tip for eBook writers...
This is essential if you've used a variety of different fonts, because it embeds those fonts in the pdf (so they don't come out as gobbledygook).
Here's what you do - when your epic bestseller is complete and your ready to export as PDF - Click on "File" and "Export as PDF".
The box below will pop-up and you need to "tick" the "PDF/A-1a" and that's it, job's a good un, export away.
All the best,
Ray