+<!-- vulgar fraction 1/3, U+2153 ISOnum -->
+<!ELEMENT ch.frac13 EMPTY><!ATTLIST ch.frac13 %core.attributes;>
+
+<!-- vulgar fraction 2/3, U+2154 ISOnum -->
+<!ELEMENT ch.frac23 EMPTY><!ATTLIST ch.frac23 %core.attributes;>
+
+<!-- vulgar fraction 1/5, U+2155 ISOnum -->
+<!ELEMENT ch.frac15 EMPTY><!ATTLIST ch.frac15 %core.attributes;>
+
+<!-- vulgar fraction 2/5, U+2156 ISOnum -->
+<!ELEMENT ch.frac25 EMPTY><!ATTLIST ch.frac25 %core.attributes;>
+
+<!-- vulgar fraction 3/5, U+2157 ISOnum -->
+<!ELEMENT ch.frac35 EMPTY><!ATTLIST ch.frac35 %core.attributes;>
+
+<!-- vulgar fraction 4/5, U+2158 ISOnum -->
+<!ELEMENT ch.frac45 EMPTY><!ATTLIST ch.frac45 %core.attributes;>
+
+<!-- vulgar fraction 1/6, U+2159 ISOnum -->
+<!ELEMENT ch.frac16 EMPTY><!ATTLIST ch.frac16 %core.attributes;>
+
+<!-- vulgar fraction 5/6, U+215A ISOnum -->
+<!ELEMENT ch.frac56 EMPTY><!ATTLIST ch.frac56 %core.attributes;>
+
+<!-- vulgar fraction 1/7, U+2150 ISOnum -->
+<!ELEMENT ch.frac17 EMPTY><!ATTLIST ch.frac17 %core.attributes;>
+
+<!-- vulgar fraction 1/8, U+215B ISOnum -->
+<!ELEMENT ch.frac18 EMPTY><!ATTLIST ch.frac18 %core.attributes;>
+
+<!-- vulgar fraction 3/8, U+215C ISOnum -->
+<!ELEMENT ch.frac38 EMPTY><!ATTLIST ch.frac38 %core.attributes;>
+
+<!-- vulgar fraction 5/8, U+215D ISOnum -->
+<!ELEMENT ch.frac58 EMPTY><!ATTLIST ch.frac58 %core.attributes;>
+
+<!-- vulgar fraction 7/8, U+215E ISOnum -->
+<!ELEMENT ch.frac78 EMPTY><!ATTLIST ch.frac78 %core.attributes;>
+
+<!-- vulgar fraction 1/9, U+2151 ISOnum -->
+<!ELEMENT ch.frac19 EMPTY><!ATTLIST ch.frac19 %core.attributes;>
+
+<!-- vulgar fraction 1/10, U+2152 ISO num -->
+<!ELEMENT ch.frac110 EMPTY><!ATTLIST ch.frac110 %core.attributes;>
+