.. note::

  All names defined in this chapter reside in the :any:`units` namespace unless specified otherwise.

Systems
=======

SI
--

.. 
   doxygennamespace:: units::si
    :members:
    :undoc-members:
    :outline:


File
----

.. 
   doxygenfile:: si/length.h

Group
-----

.. 
   doxygengroup:: si_length
    :content-only:
    :members:
    :undoc-members:
    :outline: