Success! Final stack:
  [(Lean.Doc.Syntax.dl
    "dl{"
    [(Lean.Doc.Syntax.desc
      ":"
      [(Lean.Doc.Syntax.text
        (str "\" an excellent idea\""))]
      "=>"
      [(Lean.Doc.Syntax.para
        "para{"
        [(Lean.Doc.Syntax.text
          (str "\"Let's say more!\""))]
        "}")])]
    "}")]
All input consumed.