Accessibility starts with your book's content.
Use these tools and resources to ensure that your book will be accessible for all audiences:
Hypothesis is an open source web annotation tool that allows authors, editors, and readers to highlight, annotate, and discuss content on the web.
When you enable Hypothesis in Pressbooks under Settings, readers can both create and read annotations without installing the Hypothes.is extension as long as they have a user account. These public comments will be visible to anyone who views the book.
You can control where Hypothesis is visible in your book--front matter, chapters, or only specific chapters--toggle whether highlights are on or off, and choose whether the sidebar is open by default.
You can view your book on the web by clicking on the title of your book on the top menu in Pressbooks, then clicking Visit Book. To make your Web Book public, go to Upgrade for the payment options.
You also have the option to share your book with individual subscribers or users which you add to the book. To do this, go to Settings > Sharing and Privacy Settings. Under Private Content make sure All logged in users including subscribers is selected. Then, under Users > Add New, you can invite new users to be subscribers by email.
To export your book, go to the Export page from the left sidebar menu of the book's dashboard.
Remember, you can import a Pressbooks XML file. If you create a Pressbook on a private Pressbooks.com account, you can re-upload it through your institution's hosted Pressbooks at a later date if needed.
The Publish tab of the dashboard does not have to do with your book's visibility to the public or with exporting your book. What it does is help you market your book by adding BUY links to vendors like Amazon, Barnes and Noble, and iBooks to your book's home page.