Multiply by a dimensionless value.
Multiply by a value with a unit.
Add a value with the same unit.
Subtract a value with the same unit.
Divide by a dimensionless value.
Divide by a value with a unit.
Divide by a dimensionless value.
Multiply by a dimensionless value.
Negate this value.
A value with a unit of measure.
Warning: this is an experimental feature and may be subject to removal or severe redesign.