diff --git a/doc/manual/common-options.xml b/doc/manual/common-options.xml
new file mode 100644
index 0000000000..d04042993f
--- /dev/null
+++ b/doc/manual/common-options.xml
@@ -0,0 +1,13 @@
+<sect1>
+  <title>Common options</title>
+
+  <para>
+  </para>
+
+</sect1>
+
+<!--
+local variables:
+sgml-parent-document: ("book.xml" "sect1")
+end:
+-->
diff --git a/doc/manual/schemas.xml b/doc/manual/schemas.xml
new file mode 100644
index 0000000000..076f3a1415
--- /dev/null
+++ b/doc/manual/schemas.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<locatingRules xmlns="http://thaiopensource.com/ns/locating-rules/1.0">
+  <uri pathSuffix=".xml" typeId="DocBook"/>
+</locatingRules>