Thanks Magdalena:
It all makes sense now. Petitions of course, are legal documents but not in rough draft and I suspected that the document was written by an individual who did not necessarily know legal jargon.
Your query provides proof that we cannot assume that a document is a legal document written in legal language just because a request is made under the heading of "legal". There are many informal writings, such as your rough draft, that are of a legal nature but are not legal documents and some, such as handwritten petitions and statements that are legal because they have been notarized or accepted by a court even though they are not written in legal language.