Customizable HTML pages with the built-in features:

Edit, Highlight.
Insert images, emoticons, hyperlinks.
Set colors, fonts, bookmarks.
Protect source code.
Or switch to original version at any time!

Highlights are automatically saved on local computer (as Microsoft's Userdata Behaviour).
Saving them as Backup file is supported as well.
Fast, advanced, and safe HTML format!

-- Ideal for e-Learning content!