diff --git a/reference/random/book.xml b/reference/random/book.xml
index b425e8dd3c..b9d1a183b0 100644
--- a/reference/random/book.xml
+++ b/reference/random/book.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- $Revision$ -->
-<!-- EN-Revision: 48ce43fe79fa0c9f31f187ea8ec995b4cb13037e Maintainer: mumumu Status: ready -->
+<!-- EN-Revision: 550b9c3c31a66c18c9303794c12260bf5c684fed Maintainer: mumumu Status: ready -->
 <book xml:id="book.random" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <?phpdoc extension-membership="core" ?>
  <title>乱数生成器および、乱数関連の関数</title>
@@ -18,6 +18,7 @@
  &reference.random.reference;
 
  &reference.random.random.randomizer;
+ &reference.random.random.intervalboundary;
 
  &reference.random.random.engine;
  &reference.random.random.cryptosafeengine;
diff --git a/reference/random/functions/lcg-value.xml b/reference/random/functions/lcg-value.xml
index 03a2f17b29..9f9062cc9b 100644
--- a/reference/random/functions/lcg-value.xml
+++ b/reference/random/functions/lcg-value.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- $Revision$ -->
-<!-- EN-Revision: af621f747bd54d2cbec62340a10cc7c76a082a42 Maintainer: hirokawa Status: ready -->
+<!-- EN-Revision: 9b1673cf114a1e10c4563ab9223cb56aed552b89 Maintainer: hirokawa Status: ready -->
 <!-- Credits: mumumu,jdkfx -->
 <refentry xml:id="function.lcg-value" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
@@ -15,6 +15,7 @@
  <refsect1 role="description">
   &reftitle.description;
    <methodsynopsis>
+    <modifier role="attribute">#[\Deprecated]</modifier>
     <type>float</type><methodname>lcg_value</methodname>
     <void/>
    </methodsynopsis>
diff --git a/reference/random/random.intervalboundary.xml b/reference/random/random.intervalboundary.xml
new file mode 100644
index 0000000000..12ba013b9d
--- /dev/null
+++ b/reference/random/random.intervalboundary.xml
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- $Revision$ -->
+<!-- EN-Revision: 0d51ca45814bbc60d7a1e6cf6fc7213f0b49c8d5 Maintainer: Saki Status: ready -->
+
+<reference xmlns="http://docbook.org/ns/docbook" xml:id="enum.random-intervalboundary" role="enum">
+ <title>Random\IntervalBoundary Enum</title>
+ <titleabbrev>Random\IntervalBoundary</titleabbrev>
+
+ <partintro>
+  <section xml:id="enum.random-intervalboundary.intro">
+   &reftitle.intro;
+   <simpara>
+    列挙型の <enumname>Random\IntervalBoundary</enumname> は、ある区間に含まれる値の集合において、
+    その区間の境界値（端の値）を含めるかどうかを指定します。
+   </simpara>
+  </section>
+
+  <section xml:id="enum.random-intervalboundary.synopsis">
+   &reftitle.enumsynopsis;
+
+   <enumsynopsis>
+    <enumname>Random\IntervalBoundary</enumname>
+
+    <enumitem>
+     <enumidentifier>ClosedOpen</enumidentifier>
+     <enumitemdescription>
+      左開区間。下限（下側の境界）は区間に含まれ、上限（上側の境界）は含まれません。
+     </enumitemdescription>
+    </enumitem>
+
+    <enumitem>
+     <enumidentifier>ClosedClosed</enumidentifier>
+     <enumitemdescription>
+      閉区間。下限・上限の両方の境界が区間に含まれます。
+     </enumitemdescription>
+    </enumitem>
+
+    <enumitem>
+     <enumidentifier>OpenClosed</enumidentifier>
+     <enumitemdescription>
+      右開区間。上限（上側の境界）は区間に含まれ、下限（下側の境界）は含まれません。
+     </enumitemdescription>
+    </enumitem>
+
+    <enumitem>
+     <enumidentifier>OpenOpen</enumidentifier>
+     <enumitemdescription>
+      開区間。下限・上限のいずれの境界も区間に含まれません。
+     </enumitemdescription>
+    </enumitem>
+
+   </enumsynopsis>
+  </section>
+ </partintro>
+</reference>
+<!-- Keep this comment at the end of the file
+Local variables:
+mode: sgml
+sgml-omittag:t
+sgml-shorttag:t
+sgml-minimize-attributes:nil
+sgml-always-quote-attributes:t
+sgml-indent-step:1
+sgml-indent-data:t
+indent-tabs-mode:nil
+sgml-parent-document:nil
+sgml-default-dtd-file:"~/.phpdoc/manual.ced"
+sgml-exposed-tags:nil
+sgml-local-catalogs:nil
+sgml-local-ecat-files:nil
+End:
+vim600: syn=xml fen fdm=syntax fdl=2 si
+vim: et tw=78 syn=sgml
+vi: ts=1 sw=1
+-->