diff --git a/default.css b/default.css
new file mode 120000
index 0000000..740cf1e
--- /dev/null
+++ b/default.css
@@ -0,0 +1 @@
+examples/common/default/default.css
\ No newline at end of file
diff --git a/examples/common/default/default.css b/examples/common/default/default.css
index b6d0e5b..ba0c29c 100644
--- a/examples/common/default/default.css
+++ b/examples/common/default/default.css
@@ -107,3 +107,13 @@
 div.xy96x96 {min-width: 96px; min-height: 116px;}
 div.xy50x50 {min-width: 50px; min-height: 70px;}
 div.right {clear: both; float: right;}
+
+/*
+ * PR Web
+ */
+body.pr {font-size: 200%;}
+body.pr h1 {
+    text-align: center; width: 80%; padding: 3ex 0; margin: 0 auto;
+    background: #ffefef; border: double 5px navy;
+}
+
diff --git a/index.html b/index.html
index d70ed89..6096e16 100644
--- a/index.html
+++ b/index.html
@@ -8,6 +8,9 @@
 <h1>S4</h1>
 <h2>SNS by Shell Script and SQLite3</h2>
 
+<ul>
+ <li><a href="whatss4.html">なんぞや</a></li>
+</ul>
 <hr>
 <!--#include virtual="/~yuuji/signature.html"-->
 </body>