You can annotate text in the following source types:
In current release of NVivo for Mac you cannot annotate text in datasets or audio or video transcripts. I have raised the matter with our Product Manager who collates all feature requests and prioritises them accordingly.
Bhupesh, could you also forward a request to the Product Manager to enable viewing and printing all annotations as stand alone items? Annotations are created analytical content and need to be viewable in their own right, not just in the sources. See my post on the "limitations of annotations".