1. Introduction (opening) summarizes the information known to the readers with articles and information will answer questions linked to, then the next authors can focus on answering questions.
2. Construction of the preamble by Method SCQA
S: Situation (background) begin to tell the story related to the topic, the audience should be familiar with the background and content will be approved, it will help the audience accept it behind your opinion
C: Complication (conflict) caused the audience's questions
Q: Question (question) the audience questioned
A: Answer (Answer) to answer audience questions