Define "subprocess" in the context of PRPC.

In the context of Pega Rules Process Commander (PRPC), a subprocess is defined as a reusable flow that can be called from other flows. This functionality allows developers to promote efficiency and modularity in application design by breaking down complex processes into smaller, manageable components. By using subprocesses, teams can enhance maintainability, as changes made to a subprocess are automatically reflected in all flows that utilize it. This not only reduces duplication of effort but also ensures consistency across processes. The ability to call a subprocess from various places in an application caters to a wide range of scenarios without the need to rewrite flow logic, thereby streamlining development and improving the overall design.