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Generic formula added
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;
* equivalents - one or more equivalents might be available, i.e. in grams 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;
* subcontainers - a container might comprise multiple subcontainers (or even subsubcontainers) [hierarchy?]
* subcontainers - a container might comprise multiple subcontainers (or even subsubcontainers) [hierarchy?/taxonomy?]
* (sub-)container synonyms - a user might container other words to describe a container, such as bottle, can, bag, etc.
* (sub-)container synonyms - a user might container other words to describe a container, such as bottle, can, bag, etc. [hierarchy?/taxonomy?]
* defaults - in indicating the quantity some parts are assumed to be understood. If it states 33cl it is assumed to be about the container (the bottle) and the product (beer);
* defaults - in indicating the quantity some parts are assumed to be understood. If it states 33cl it is assumed to be about the container (the bottle) and the product (beer);
*
* components - a product might consist of multiple components, which must be combined to get the product. Cf Creme brulee = vanilla cream + caramel flakes (to be heated).
* subproduct - sometimes a subproduct quantity is indicated (net/brut, egoutté/drained);
* verbosity - the language used in specifying quantity must be translated to a parsable format;
=== Generic formula ===
Any generic quantity formula should reference the product(-name), the container and a volume or weight measure. The productname and container should (?) reference the corresponding fields.
The top level quantity formula, i.e. the package a customer buys is:
<big>container_unit x package_name x product_name x quantity_value x quantity_unit</big>
For example:
* 1 bottle of red wine comprising 70 cl (on the bottle indicated as "70 cl")
=== Practical usage ===
* to indicate times, either a "*" or a "x" can be used;
* to indicate times, either a "*" or a "x" can be used;