Click Preferences from the Read or Workspace or Projects menu to open the Preferences dialogue box.
In the Viewing section, select your font family and font size.
If you want to view the publications contents pane (also known as Table of Contents), select 'On' for Publication Contents Pane.
If you want to view original line breaks, select 'On' for View publisher line breaks. (View publisher line breaks allows you to view the book as it was originally printed by the publisher. The default setting is to extend the text to take advantage of the full width of the screen.) If selected, this option will be set as the default for all books that support this setting.
If you want to enable popup help, select 'On' for Popup Help.
Click Save at the bottom of the page to apply the new setting and close the Preferences dialogue box.
Note
All changes made in Preferences become the new default settings.
More
Viewing a Publication in Screen-Friendly Format or as Originally Printed
Printing a Publication Page in Read