Originally Posted by jswinden
The default is definitely justified on the standard 900 firmware. If you are using alternative firmware or the ePub has hardcoded CSS text alignment then it might display differently.
This is also the case with all other ADE devices that I'm aware of; in the absence of hard-coded justification, the book will default to full justification. Some devices (eg the CyBook Opus) will allow the user to toggle between left and full justification.