Each sub-recipe row is followed by indented rows for its component ingredients (nested sub-recipes are tagged subrecipe, trims as +X%). Show Ingredients in a section header collapses or expands those rows for that section; Show All Ingredients in the toolbar does it for every section at once. The toggle state is carried into the print links, so a section you collapsed on screen prints without its ingredient rows. A small spinner shows while very large reports re-render.