.. Set up some substitutions to make life easier...
.. Remove |biggamma|, etc. when they are no longer needed.

    .. |alpha| unicode:: U+03B1
    .. |beta| unicode:: U+03B2
    .. |gamma| unicode:: U+03B3
    .. |delta| unicode:: U+03B4
    .. |epsilon| unicode:: U+03B5
    .. |zeta| unicode:: U+03B6
    .. |eta| unicode:: U+03B7
    .. |theta| unicode:: U+03B8
    .. |iota| unicode:: U+03B9
    .. |kappa| unicode:: U+03BA
    .. |lambda| unicode:: U+03BB
    .. |mu| unicode:: U+03BC
    .. |nu| unicode:: U+03BD
    .. |xi| unicode:: U+03BE
    .. |omicron| unicode:: U+03BF
    .. |pi| unicode:: U+03C0
    .. |rho| unicode:: U+03C1
    .. |sigma| unicode:: U+03C3
    .. |tau| unicode:: U+03C4
    .. |upsilon| unicode:: U+03C5
    .. |phi| unicode:: U+03C6
    .. |chi| unicode:: U+03C7
    .. |psi| unicode:: U+03C8
    .. |omega| unicode:: U+03C9

    .. |biggamma| unicode:: U+0393
    .. |bigdelta| unicode:: U+0394
    .. |bigzeta| unicode:: U+039E
    .. |bigpsi| unicode:: U+03A8
    .. |bigphi| unicode:: U+03A6
    .. |bigsigma| unicode:: U+03A3
    .. |Gamma| unicode:: U+0393
    .. |Delta| unicode:: U+0394
    .. |Zeta| unicode:: U+039E
    .. |Psi| unicode:: U+03A8

    .. |drho| replace:: |Delta|\ |rho|

    .. |equiv| unicode:: U+2261
    .. |noteql| unicode:: U+2260
    .. |TM| unicode:: U+2122



.. |Ang| unicode:: U+212B
.. |Ang^-1| replace:: |Ang|\ :sup:`-1`
.. |Ang^2| replace:: |Ang|\ :sup:`2`
.. |Ang^-2| replace:: |Ang|\ :sup:`-2`
.. |1e-6Ang^-2| replace:: 10\ :sup:`-6`\ |Ang|\ :sup:`-2`
.. |Ang^3| replace:: |Ang|\ :sup:`3`
.. |Ang^-3| replace:: |Ang|\ :sup:`-3`
.. |Ang^-4| replace:: |Ang|\ :sup:`-4`
.. |cm^-1| replace:: cm\ :sup:`-1`
.. |cm^2| replace:: cm\ :sup:`2`
.. |cm^-2| replace:: cm\ :sup:`-2`
.. |cm^3| replace:: cm\ :sup:`3`
.. |1e15cm^3| replace:: 10\ :sup:`15`\ cm\ :sup:`3`
.. |cm^-3| replace:: cm\ :sup:`-3`
.. |sr^-1| replace:: sr\ :sup:`-1`
.. |P0| replace:: P\ :sub:`0`\
.. |A2| replace:: A\ :sub:`2`\

.. |cdot| unicode:: U+00B7
.. |deg| unicode:: U+00B0
.. |g/cm^3| replace:: g\ |cdot|\ cm\ :sup:`-3`
.. |mg/m^2| replace:: mg\ |cdot|\ m\ :sup:`-2`
.. |fm^2| replace:: fm\ :sup:`2`
.. |Ang*cm^-1| replace:: |Ang|\ |cdot|\ cm\ :sup:`-1`