Which feature enables local variable management within Server/Client actions?

The feature that enables local variable management within Server and Client actions is local variables. Local variables are used within the context of a specific action to store temporary data that only that action can access. This allows developers to manage data dynamically, facilitating calculations, data manipulation, and control flows without impacting other parts of the application.

Local variables can be declared and assigned values within the action and are scoped only to that specific action's execution. This means they can be used to hold intermediate results or flags that determine the control flow within the same action. By managing data locally, developers can create cleaner, more maintainable code and enhance performance by reducing the need for unnecessary data handling.

In contrast, input parameters are utilized to pass data into an action, output parameters serve to return data from an action, and flow control refers to the mechanisms that determine the execution path within the actions but do not specifically manage local state. Therefore, the function of local variable management is distinctly and effectively fulfilled by local variables.