Functionality
Y/N
Available on different platforms Y (somewhat)
Partial
Don't know
N
N
N
Hyperlinks N (somewhat)
Playing sound and video files Y
N (somewhat)
Saving notes
Y (somewhat)
Highlight text Y (somewhat)
Interactive exercises N
Easy zoom in/out Y (somewhat)
Search/find Y (somewhat)
Bookmarks Y (somewhat)
Y (somewhat)
Online & offline modes?
Text being played as sound. Syncronized?
possibility for switch access
general accessibility to text, f.ex. for connection to a braille terminal
Changing font size and font and background colours (contrast)
Wordbank (specialized notes)
Easy navigation with icon-sized screenshots