> We frequently break up large systems into chunks like modules, or micro-services, or subsystems. Often, these chunks' relationships are described using diagrams, like flowcharts or state transition diagrams, etc.

We frequently break up large systems into chunks like modules, or micro-services, or subsystems. Often, these chunks' relationships are documented using diagrams on a high level (like flowcharts or state transition diagrams etc.), but are not executable.

Fixed it for you.