What do referring pages in a backtrace flow diagram show?

Referring pages in a backtrace flow diagram illustrate the HTTP identifiers that contribute to a specific flow of requests. This feature is crucial for understanding how different pages or components on a website interconnect and interact during a user's session. By displaying these identifiers, users can trace back which pages initiated specific requests, allowing for better insight into user behavior and the performance of the application. The information helps identify potential bottlenecks or errors in resource requests, leading to more effective optimizations and troubleshooting strategies.

While other options such as execution time, order of requests, and total number of requests provide valuable information in different contexts, they do not capture the primary function of referring pages, which is to highlight the specific HTTP identifiers involved in the flow. This focus on connection and contribution is vital for diagnosing issues and enhancing application performance.