Standard ISO entities.
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+<!-- (C) International Organization for Standardization 1986
+ Permission to copy in any form is granted for use with
+ conforming SGML systems and applications as defined in
+ ISO 8879, provided this notice is included in all copies.
+-->
+<!-- Character entity set. Typical invocation:
+ <!ENTITY % ISOdia PUBLIC
+ "ISO 8879:1986//ENTITIES Diacritical Marks//EN">
+ %ISOdia;
+-->
+<!ENTITY acute SDATA "[acute ]"--=acute accent-->
+<!ENTITY breve SDATA "[breve ]"--=breve-->
+<!ENTITY caron SDATA "[caron ]"--=caron-->
+<!ENTITY cedil SDATA "[cedil ]"--=cedilla-->
+<!ENTITY circ SDATA "[circ ]"--=circumflex accent-->
+<!ENTITY dblac SDATA "[dblac ]"--=double acute accent-->
+<!ENTITY die SDATA "[die ]"--=dieresis-->
+<!ENTITY dot SDATA "[dot ]"--=dot above-->
+<!ENTITY grave SDATA "[grave ]"--=grave accent-->
+<!ENTITY macr SDATA "[macr ]"--=macron-->
+<!ENTITY ogon SDATA "[ogon ]"--=ogonek-->
+<!ENTITY ring SDATA "[ring ]"--=ring-->
+<!ENTITY tilde SDATA "[tilde ]"--=tilde-->
+<!ENTITY uml SDATA "[uml ]"--=umlaut mark-->