Examples
Here are some example documents to test Fab4 features (of course, you can try with your own files):
Different versions of the same file.
Notice that the annotations stick to the different formats of the document.
PDF files (Acrobat format):
DVI files:
Images:
Web sites:
You can also try opening any other supported file (HTML, PDF, ODT, Image, DVI...) from your local drive.
Any of these pages will do as well for testing.