The delivery technique Marcus is using while delivering a speech verbatim from a teleprompter is manuscript delivery. So the text he is reading is called a manuscript, and he is delivering it in front of cameras or people. Verbatim means word for word - so he is reading everything that is written in the text. This is a common method of reading text during news on TV, for example.
Orwell’s purpose is to persuade readers to use simple language and political writing. He achieve this by discouraging the use of worn out words and phrases.
I think the sentence that best supports this is "I will advise you and direct you. I should not be a man if this womanly helplessness did not just give you a double attractiveness in my eyes."
