> Even a long time ago when websites were static things rendered by the browser once and then left alone there was always a tree of nodes underlying everything
... yes ? the name of this "tree of nodes" is not "Document object model" for nothing.
Though the web is made of documents, not the objects within.
There's no native way to link to specific objects in the DOM that are not identified as part of the document through an ID; the anonymous objects in the DOM can only be accessed programmatically, URLs have no syntax to traverse the tree like there is an "#anchor" section for accessing chapters.
... yes ? the name of this "tree of nodes" is not "Document object model" for nothing.