lib/asciidoctor/csd/isodoc.rng in asciidoctor-csd-0.4.2 vs lib/asciidoctor/csd/isodoc.rng in asciidoctor-csd-0.4.3

@@ -886,15 +886,21 @@
           <value>PDF</value>
         </choice>
       </attribute>
       <optional>
         <attribute name="width">
-          <data type="int"/>
+          <choice>
+            <data type="int"/>
+            <value>auto</value>
+          </choice>
         </attribute>
       </optional>
       <optional>
         <attribute name="height">
-          <data type="int"/>
+          <choice>
+            <data type="int"/>
+            <value>auto</value>
+          </choice>
         </attribute>
       </optional>
     </element>
   </define>
   <define name="stem">