The settings for this output are shown below.
If you are generating a Kindle book, when you select that option, the Kindle Gen Path button will allow you to define where the Amazon Generator is installed or take you to Amazon's site so that you can download it.
For EPUB 3 you can validate your output and clicking the EpubCheckPath button will allow you to define where the validator is installed or to download it.
For EPUB 2.0.1 you need to use the XML Layout option and then go to File > Generate > EPUB2.0.1 Output.
The eBook topics require a different Master Page without a link to the Whirl the World website. This has been achieved by applying a different Master Page in the Content options.
You will need an eBook reader such as Adobe Digital Editions. The available devices vary in their support of different features so thorough testing is required.
RoboHelp (2015 release) gives you the ability to embed any font in the topics. Note that you must have a licence to distribute the font.