What is true about Blocks in OutSystems reactive applications?

In OutSystems reactive applications, Blocks serve as reusable components that help organize and structure the user interface efficiently. The statement that Blocks can be instantiated on Screens and other Blocks is accurate. This flexibility allows developers to create complex interfaces by nesting Blocks within one another, enabling the reuse of UI components across different parts of the application.

This capability promotes the DRY (Don't Repeat Yourself) principle, as developers can build a Block once and use it in multiple locations, reducing redundancy and simplifying maintenance. By leveraging Blocks in this way, the organization of the application becomes more manageable, and any updates made to a Block will automatically reflect wherever that Block is used.

Blocks also have the ability to include logic, which means they can contain actions, events, and other programming constructs, thereby enhancing their functionality. Furthermore, while Blocks can indeed be created without input parameters, providing parameters can make them more flexible and dynamic, allowing for customization based on the context in which they are used.