t;
&lt;!ENTITY Pi       CDATA "&amp;#928;" -- greek capital letter pi, U+03A0 ISOgrk3 --&gt;
&lt;!ENTITY Rho      CDATA "&amp;#929;" -- greek capital letter rho, U+03A1 --&gt;
&lt;!-- there is no Sigmaf, and no U+03A2 character either --&gt;
&lt;!ENTITY Sigma    CDATA "&amp;#931;" -- greek capital letter sigma,
                                    U+03A3 ISOgrk3 --&gt;
&lt;!ENTITY Tau      CDATA "&amp;#932;" -- greek capital letter tau, U+03A4 --&gt;
&lt;!ENTITY Upsilon  CDATA "&amp;#933;" -- greek capital l