Custom components
They're either custom markdown components or passed through directly via "components".
Header chips
- Manages modal stacking when one-at-a-time just isn't enough.
- Creates a backdrop, for disabling interaction below the modal.est
- It disables scrolling of the page content while open.
- It properly manages focus; moving to the modal content, and keeping it there until the modal is closed.
- Adds the appropriate ARIA roles automatically.