diff --git a/expat/doc/reference.html b/expat/doc/reference.html
index 7f2466ff..a983a7eb 100644
--- a/expat/doc/reference.html
+++ b/expat/doc/reference.html
@@ -317,12 +317,12 @@ and the definition of character types in the case of
- XML_DTD
- Include support for using and reporting DTD-based content. If
-this is defined, default attribute values from the DTD are reported
-and attribute value normalization occurs based on the type of
-attributes. Callbacks can be registered which report information from
-the DTD (including content models and attribute definitions) only if
-this is defined. Without this, Expat has a smaller memory footprint
-and can be faster.
+this is defined, default attribute values from an external DTD subset
+are reported and attribute value normalization occurs based on the
+type of attributes defined in the external subset. Without
+this, Expat has a smaller memory footprint and can be faster, but will
+not load external entities or process conditional sections. This does
+not affect the set of functions available in the API.
- XML_NS
- When defined, support for the XML_Parser if the
parser itself is passed. When the parser is passed, the user data may
be retrieved using
XML_GetUserData
.
+>XML_GetUserData.
One common case where multiple calls to a single handler may need
to communicate using an application data structure is the case when