I guess to have info in the Node Library about your node it needs to be a fully compiled Vuo node. Would be good if sub-compositions could have explanatory text and links to example compositions. This would especially benefit the sharing of sub-comps in the Vuo community. Sometimes it's important to list gotcha's and limitations of a sub composition's functionality and the Node Library documentation seems like the obvious place to do it.
This would require that sub-comp contain a text field that could use MarkDown for the node documentation and links.