Google extracts a non-deranged HTML node from a zip file containing an HTML file obtained from the File > Download > Web Page (.html, zipped) option in Google Docs.

InsertSorted inserts x into a, which is presumed to be sorted, maintaining its sorted order, and returns a (which has potentially been copied in order to be grown) and boolean true if x was inserted and false if it wasn't (because it was already present).

Merge several parsed HTML documents into one.

Parse reads a complete HTML document from an io.Reader.

ParseFile opens an HTML file, parses the document it contains, closes the file descriptor, and returns the parsed HTML document.

ParseFiles accepts a slice of HTML (or Markdown) document names, parses the documents, and returns []*Node and a nil error or nil and a non-nil error.

ParseString parses an HTML document or document fragment from a string.

Print serializes and prints the *Node to standard output.

Render is an alias for x/net/html's Render function.

RenderFile writes an HTML document to a file, overwriting if the file already exists.

String renders the *Node to a string and returns it.

TextOnlyNode could be structured as a tree of linked lists, like the DOM, but if we do that then the somewhat naive indexing libraries won't be able to follow.