Have a look here: IBM Developer
Niklas describes here how to create a page in a composite app which displays a Notes document based on it’s form.
I tried that, but it does not work here. I have a form with the alias “test” and a CA page with the alias “test”. On the page there is a NSF compontent which points to the form “test” and has the com.ibm.notes.isDocumentPlaceholder=true property set.
But the documents having the form “test” do not open inside the CA. They open in the classic way.
Does this feature work for anyone? What am I missing?