Troy Segal is an editor and writer. She has 20+ years of experience covering personal finance, wealth management, and business news. Toby Walters is a financial writer, investor, and lifelong learner.

A signal board contains at most N signals. Where a signal is just composed of an id and name. A signal's name should be delimited by dots, e.g. "movement.arrived". Signals are structured into a trie ...