An FAQ is a list of frequently asked questions (FAQs) and answers on a particular topic (also known as Questions and Answers [Q&A] or Frequently Answered Questions). The format is often used in articles, websites, email lists, and online forums where common questions tend to recur, for example through posts or queries by new users related to common knowledge gaps. The purpose of an FAQ is generally to provide information on frequent questions or concerns; however, the format is a useful means of organizing information, and text consisting of questions and their answers may thus be called an FAQ regardless of whether the questions are actually frequently asked. An FAQ has been added to the Flight Tracker sample application using the material design expander panels.