Templates are built using different kinds of blocks. There are several kinds of block types, like:

Here's an example of a website block:

Blocks can be either manual, or AI-powered, like the block below. Notice how this block has an "ai" label next to its name. It also has an "Edit prompt" button, as well as "Regenerate" and "Continue". When you click the generate button, these blocks will start getting populated with content.