Your own units

unit declares a unit in terms of one that exists. also: lists other names for it.

unit stick = 113 g, also: sticks
339 g to sticks
unit chain = 22 yard, also: chains
1 furlong to chains

A count on the left works too: unit 12 inch = 1 ft.

A unit with no definition starts a new dimension.

unit widget of Count, also: widgets
unit box = 24 widget, also: boxes
5 boxes to widgets

A unit defined as a bare number is a dimensionless multiple.

unit dozen = 12
2 dozen + 3

unit group names a list for to; unit compound names a fixed display recipe. A format: on a unit or compound sets its default display.

unit group cooking: cup, tablespoon, teaspoon
1.25 cup to cooking
unit compound height: ft, inch, format: 1 dp
1.8 m to height

dimension declares a dimension by hand, alone or from others.

dimension Tokens
unit token of Tokens, also: tokens
unit ktoken = 1000 token
1.5 ktoken * $0.03 / 1 ktoken

Units and dimensions can be declared anywhere in a document.