If you indent or nest a block underneath another block, a toggle button will appear on the block above, allowing you to fold/collapse the content underneath.
How to Nest Blocks
There are two ways to nest blocks underneath each other.
Tabbing
The first way to nest blocks is by pressing Tab on your keyboard. This will indent/nest the block underneath the block above it. You can also press Shift + Tab to unindent/unnest the block.
Dragging and Dropping
The second way to indent/nest blocks is to drag and drop a block on top of another block as in the image below.
