Generating a Page
Replace or Append
Replace current page content swaps the open page's layout for the generated one. Your previous content is saved to Version History first, so it is one click from undo.
Append as a new section adds the generated section(s) to the end of the page and leaves everything already there untouched. New sections, columns and blocks never reuse an ID already on the page, so appended content cannot collide with what is there.
Append is good for growing a page a section at a time — add a hero, then a feature row, then a pricing block — each from its own short prompt.