The correct answer to this open question is the following.
Unfortunately, there are no more references or context attached. However, we can comment on the following terms.
Textual aids are educational instruments that are used in classrooms and
workplaces and serve to increase the teaching tools to improve the quality of education. Some of these texts serve to simplify texts in the classroom. Images are commonly known to be an important part of these texts because they add visual content that allows students to better understand the lessons and make them more fun.
One good example of textual aids is commonly known as cause and effect diagram and serves to identify the consequences of the decisions made.
The conflict in the Austere Academy is an external conflict. It begins when Coach Genghis makes Violet, Sunny, and Klaus Baudelaire run laps every night from sundown to sunrise. He made the Baudelaires paint a large glow in the track for them to run around. Coach Genghis is a pseudonym for the mean and cruel Count Olaf. Count Olaf is the main reason of the conflict because he is trying to capture the Baudelaires so he can steal their fortune. The climax in the book is when Count Olaf or A.K.A Coach Genghis arrives at Prufrock Preparatory School and becomes the new Gym teacher. The resolution to the conflict is that the Quagmires ( the Baudelaires Friends) help get Count Olaf busted for trying to steal the Baudelaires Fortune, but however get themselves in to extreme danger.
The character of Sidney in "D*cky Markle" is a minor character. She is there to serve as a complement to her father, the major character. She is also there to help the plot of the story move forward.
Had Sidney not discover the World War II medal of Richard, her deceased uncle, her father would not have remembered that past wherein D*cky was still alive and the many events that unfolded after that.