diff --git a/appendices/extensions.xml b/appendices/extensions.xml
index a868a9b58b..d43c4fe669 100644
--- a/appendices/extensions.xml
+++ b/appendices/extensions.xml
@@ -12,6 +12,7 @@
&extcat.alphabetical;
+
@@ -20,6 +21,7 @@
+
@@ -27,6 +29,7 @@
+
@@ -54,15 +57,19 @@
+
+
+
+
-
+
@@ -79,8 +86,11 @@
+
+
+
@@ -91,6 +101,8 @@
+
+
@@ -103,6 +115,9 @@
+
+
+
@@ -110,6 +125,7 @@
+
@@ -124,10 +140,23 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
@@ -135,15 +164,17 @@
+
+
-
+
@@ -152,16 +183,21 @@
+
-
+
+
+
+
+
@@ -169,22 +205,27 @@
+
+
+
+
+
@@ -206,6 +247,7 @@
+
@@ -213,8 +255,10 @@
+
+
@@ -262,6 +306,7 @@
+
@@ -270,6 +315,8 @@
+
+
@@ -277,6 +324,7 @@
+
@@ -288,8 +336,8 @@
-
+
@@ -298,8 +346,10 @@
+
+
@@ -339,6 +389,7 @@
+
@@ -351,8 +402,10 @@
+
+
@@ -360,6 +413,8 @@
+
+
@@ -368,6 +423,7 @@
+
@@ -376,6 +432,7 @@
+
@@ -393,6 +450,7 @@
+
@@ -420,12 +478,12 @@
-
+
@@ -433,10 +491,14 @@
+
+
+
+
@@ -444,12 +506,15 @@
+
+
+
@@ -457,6 +522,8 @@
+
+
@@ -466,6 +533,7 @@
+
@@ -473,29 +541,32 @@
+
+
+
+
-
+
-
-
+
@@ -510,6 +581,7 @@
&extcat.state.deprecated;
+
@@ -527,7 +599,6 @@
-
@@ -540,7 +611,6 @@
-
@@ -570,4 +640,3 @@ vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
-
diff --git a/reference/chdb/book.xml b/reference/chdb/book.xml
index 454b5429ae..d1915416eb 100644
--- a/reference/chdb/book.xml
+++ b/reference/chdb/book.xml
@@ -1,5 +1,6 @@
+
Constant hash database
diff --git a/reference/dio/book.xml b/reference/dio/book.xml
index 91aa9deeb8..03ffc34ad2 100644
--- a/reference/dio/book.xml
+++ b/reference/dio/book.xml
@@ -1,5 +1,6 @@
+
Direct IO
diff --git a/reference/dir/book.xml b/reference/dir/book.xml
index b182946c8c..655777a54a 100644
--- a/reference/dir/book.xml
+++ b/reference/dir/book.xml
@@ -1,5 +1,6 @@
+
Directories
diff --git a/reference/dotnet/book.xml b/reference/dotnet/book.xml
index 7042dec826..6edf14b211 100644
--- a/reference/dotnet/book.xml
+++ b/reference/dotnet/book.xml
@@ -1,5 +1,7 @@
+
+
.NET
diff --git a/reference/filter/book.xml b/reference/filter/book.xml
index 86cf37dc1f..22afb48d8d 100644
--- a/reference/filter/book.xml
+++ b/reference/filter/book.xml
@@ -1,6 +1,7 @@
+
Data Filtering
diff --git a/reference/mongo/book.xml b/reference/mongo/book.xml
index 2a8b2cc58c..04476ee812 100644
--- a/reference/mongo/book.xml
+++ b/reference/mongo/book.xml
@@ -1,5 +1,6 @@
+
MongoDB Native Driver
diff --git a/reference/reflection/book.xml b/reference/reflection/book.xml
index 3b48013c13..5744ae621a 100644
--- a/reference/reflection/book.xml
+++ b/reference/reflection/book.xml
@@ -1,5 +1,6 @@
+
Reflection
diff --git a/reference/soap/book.xml b/reference/soap/book.xml
index 3ef8262bb1..0d3fc44d22 100644
--- a/reference/soap/book.xml
+++ b/reference/soap/book.xml
@@ -1,5 +1,6 @@
+
SOAP
diff --git a/reference/sphinx/book.xml b/reference/sphinx/book.xml
index e59f572b07..2d3eaaa7e9 100644
--- a/reference/sphinx/book.xml
+++ b/reference/sphinx/book.xml
@@ -1,5 +1,6 @@
+
Sphinx Client
diff --git a/reference/spl/book.xml b/reference/spl/book.xml
index 970c1ff7c4..f331b37447 100644
--- a/reference/spl/book.xml
+++ b/reference/spl/book.xml
@@ -1,5 +1,6 @@
+
Standard PHP Library (SPL)
diff --git a/reference/sqlite3/book.xml b/reference/sqlite3/book.xml
index f9b7e992e6..78d93fe06d 100644
--- a/reference/sqlite3/book.xml
+++ b/reference/sqlite3/book.xml
@@ -1,5 +1,6 @@
+
SQLite3
diff --git a/reference/stats/book.xml b/reference/stats/book.xml
index dc8a7ea134..206b159948 100644
--- a/reference/stats/book.xml
+++ b/reference/stats/book.xml
@@ -1,5 +1,6 @@
+
Statistics
diff --git a/reference/tidy/book.xml b/reference/tidy/book.xml
index 8bc19c3646..0dfed39e28 100644
--- a/reference/tidy/book.xml
+++ b/reference/tidy/book.xml
@@ -1,5 +1,6 @@
+
Tidy
diff --git a/reference/xmlreader/book.xml b/reference/xmlreader/book.xml
index ea105ca308..19b6427611 100644
--- a/reference/xmlreader/book.xml
+++ b/reference/xmlreader/book.xml
@@ -1,5 +1,6 @@
+
XMLReader
diff --git a/reference/xmlwriter/book.xml b/reference/xmlwriter/book.xml
index 735220e434..2def675655 100644
--- a/reference/xmlwriter/book.xml
+++ b/reference/xmlwriter/book.xml
@@ -1,7 +1,7 @@
-
+
XMLWriter