3. Restrict data visibility with modules

Overview

Encapsulate globally accessible data, such as common blocks, within modules. This approach allows for controlled access interfaces, improving code readability and minimizing side effects from global data storage.

Checks

• PWR073: Transform common block into a module for better data encapsulation.

• PWR069: Use the keyword only to explicitly state what to import from a module.

• Planned: Minimize mutable module variables by passing data as procedure arguments.

• Planned: Privatize mutable module variables and add procedures for more controlled access.