Information display apparatus and question inputting apparatus, and display system

A system comprising:

• a question inputting apparatus;
• an information processing apparatus;
• and
• an information display apparatus;
• the question inputting apparatus comprising:
• an input unit that inputs a question to a displayed image with a designation of a question target page;
• a question information generating unit that generates the question information including the question and the question target page;
• and
• a first communication unit that sends the question information to the information display apparatus;
• the information processing apparatus comprising:
• a second communication unit that receives the question information from the question inputting apparatus;
• a question management unit that adds identification management information to the question information;
• a question image generating unit that generates a question image based on the question information;
• an operation unit that accepts a request from an external source;
• a page management unit that determines a display order for displaying the question target pages based on the identification management information and sends a request for displaying a composed image that is generated by composing the question image with the display image based on a display request in response to a request for displaying the question from the operation unit;
• and
• a third communication unit that sends a request for displaying the composed image;
• the information display apparatus comprising:
• a fourth communication unit that receives the request for displaying the composed image from the information processing apparatus;
• and
• a display unit that displays the composed image.