Hi,
I couldn’t find another link on the site that demonstrates the available annotations so I downloaded your .NET annotations sample from GitHub but i’m unable to load anything!!
We need to annotate multiple layers, link to other documents, add ‘hotspots’ which would contain links to other areas of our application… amongst other things, its quite an extensive list… 

Receive the error {“At most 4 elements (for any collection) can be viewed in evaluation mode.”} when trying to load your ‘Quick__Start_Guide_to_using_groupdocs.pdf’ file. I simply want to see the annotation options available…
Also had to comment out the AnnotationController line setting the licence file to get it to run at all… No evaluation licence found within the downloaded archive.
Should I be able to load a document using the ‘GroupDocs.Annotation.Web.Samples’ solution?
Regards,
Colin