Avoid nesting includes

Author: SakiTakamachi

reference/bc/functions/bcdiv.xml

@@ -52,8 +52,19 @@
  </refsect1>
 
  <refsect1 role="errors">
-  <!-- Include standard ValueErrors for num1, num2, and scale, this includes the title -->
-  <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('function.bcadd')/db:refsect1[@role='errors']/*)" />
+  &reftitle.errors;
+  <para>
+   This function throws a <exceptionname>ValueError</exceptionname> in the following cases:
+   <simplelist>
+    <member>
+     <parameter>num1</parameter> or <parameter>num2</parameter>
+     is not a well-formed BCMath numeric string.
+    </member>
+    <member>
+     <parameter>scale</parameter> is outside the valid range.
+    </member>
+   </simplelist>
+  </para>
   <simpara>
    This function throws a <exceptionname>DivisionByZeroError</exceptionname>
    exception if <parameter>num2</parameter> is <literal>0</literal>.