Unit quality

Besides a quantity, units can also have a quality.

For instance, 1 kilogram of flour and 30 grams of sugar are both represented by units of mass with different qualities flour and sugar.

You can define Qualities with the keyword of.

An example will make things easier to grasp:

With qualities, you are able to express data relations in a more realistic way. On our example you can clearly see that for every kg of flouryou will have 75 g of butter. Awesome right?

Here's another example: