Notion's "blocks" are a feature that allows users to create different types of content, such as text, images, videos, and more, and organize them in a flexible and customizable way. The built-in automation feature, also known as "block automation," allows users to automate repetitive tasks and create custom workflows within their Notion pages.

Examples of how you can use block automation include:

• Creating a template page that automatically populates with certain information when you create a new page, such as a meeting agenda template that includes a list of attendees and a section for notes.
• Setting up a rule that automatically moves a page to a specific section or database when certain conditions are met, such as moving a task to the "Completed" section when you mark it as done.
• Creating a custom formula that calculates a value based on information in other blocks, such as a budget tracker that calculates the total amount spent.

Block automation is available for all Notion users, but it requires a paid subscription to use more advanced features such as custom formulas and rules.