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Some remarks:
Some remarks:
* product central - any quantity that is indicated is about the product and not the packaging;
* product central - any quantity that is indicated is about the product and not the packaging;
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* product unit - reference may be made to a product unit, eg a cookie, a chocolate egg, etc.
* equivalents - one or more equivalents might be available, i.e. in grams, oz or liters, 24 cookies / 6 cookies in 4 packages;
* equivalents - one or more equivalents might be available, i.e. in grams, oz or liters, 24 cookies / 6 cookies in 4 packages;
* containers - the generic toplevel package is a container;
* containers - the generic toplevel package is a container;
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* marketing - some quantities are added for marketing purposes, extra 25g;
* marketing - some quantities are added for marketing purposes, extra 25g;
* subsubcontainers - an extra subdivision, eg 1 carton of yoghurt with 2 layers and 8 pots per layer;
* subsubcontainers - an extra subdivision, eg 1 carton of yoghurt with 2 layers and 8 pots per layer;
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* servings - a quantity might contain a number of servings
=== Generic formula ===
=== Generic formula ===