# Modules The Modules section documents the main components of the model and how they are connected. Each module page describes the function of the module, including variables and equations, with links to input data pages where relevant. The overall module structure is largely equivalent across the different country versions of the model, and therefore so is the documentation. However, individual implementations may vary where country-specific modelling choices have required adaptation. Each country version should therefore document both the common model logic and any case-specific deviations. **Main structure of the modules documentation:** 1. Overview 2. Population 3. Production 4. International trade 5. Innovation 6. Investment and profits 7. Financial assets and liabilities 8. Labour 9. Government 10. Prices 11. Disposable income, households and consumption 12. Energy 13. Stock-flow consistency 14. Bibliography Lower-level pages can further document specific subcomponents, such as skill distribution, labour supply, public revenue and expenditure, etc.