question about Nodes 2 from Yanobox

Hi,
Have anyone tried this impressive plugin?
I'll buy it tomorrow if someone can explain how to connect a text to a specified node.
In the demo video they manage to label few countries and the labels are on the right spot but in the manual or in their tutorial are no hints how can one do that.
Any help is very welcome, I have already asked the Yanobox support but so far .... no answer :{
Best,
Eugen