c instructions plural: an outline or manual of technical procedure : directions d: a code that tells a computer to perform a particular operation 2: the action, practice, or profession of teaching
The yield curve describes the yields for Treasury bills, notes and bonds. It's called a curve because, if it were plotted on a graph, the yields would normally slope up. That's because Treasury bills, which are of short duration, don't usually pay as high a yield as the notes and even longer-term bonds. Why?
As such, Treasury will restrict the use of negative input yields for securities used in deriving interest rates for the Treasury nominal Constant Maturity Treasury series (CMTs). Any CMT input points with negative yields will be reset to zero percent prior to use as inputs in the CMT derivation.