Flow charts may include different levels of detail as needed, from a high-level overview of an entire system to a detailed diagram of one component process within a larger system.

Most patients with allergy problems first see PCPs, not allergists, the authors write in Allergy. The new flow diagrams help PCPs treat anaphylaxis, asthma, drug allergy, food allergy, and urticaria.

Charts help people to visualize information. A cash flow chart clarifies what your company does with its money in a way that may not be apparent when you look at a spreadsheet page full of numbers.