From: Ferruccio Guidi <ferruccio.guidi@unibo.it>
Date: Mon, 11 May 2015 13:06:32 +0000 (+0000)
Subject: some changes in lambdadelta butterflies
X-Git-Tag: make_still_working~723
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=a38bbd2c8213d8275a3d3c2ac115c45c8e478ed4;p=helm.git

some changes in lambdadelta butterflies
---

diff --git a/helm/www/lambdadelta/BTM.html b/helm/www/lambdadelta/BTM.html
index 348231c61..4e27ff561 100644
--- a/helm/www/lambdadelta/BTM.html
+++ b/helm/www/lambdadelta/BTM.html
@@ -222,6 +222,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:25 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:36 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/apps_2.html b/helm/www/lambdadelta/apps_2.html
index 4b2f19c27..e7b6ace35 100644
--- a/helm/www/lambdadelta/apps_2.html
+++ b/helm/www/lambdadelta/apps_2.html
@@ -36,18 +36,18 @@
             <td class="snns capitalize italic magenta">
               <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
+            <td class="snns capitalize italic white">
               <a href="http://lambdadelta.info/specification.html">specification</a>
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
             <td class="snns capitalize italic green">
               <a href="http://lambdadelta.info/implementation.html">implementation</a>
             </td>
@@ -62,16 +62,16 @@
             <td class="snns capitalize magenta">
               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
             </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
+            <td class="snns capitalize white">
               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
             </td>
-            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize green">
+            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="snnn capitalize white">
               <br />
             </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
             <td class="snns capitalize green">
               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
@@ -84,14 +84,14 @@
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
             </td>
+            <td class="snss capitalize white">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize orange">
               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
             </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize green">
               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
             </td>
@@ -258,6 +258,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:24 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:35 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/basic_1.html b/helm/www/lambdadelta/basic_1.html
index 3ca64b57c..22be060a6 100644
--- a/helm/www/lambdadelta/basic_1.html
+++ b/helm/www/lambdadelta/basic_1.html
@@ -36,18 +36,18 @@
             <td class="snns capitalize italic magenta">
               <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
+            <td class="snns capitalize italic white">
               <a href="http://lambdadelta.info/specification.html">specification</a>
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
             <td class="snns capitalize italic green">
               <a href="http://lambdadelta.info/implementation.html">implementation</a>
             </td>
@@ -62,16 +62,16 @@
             <td class="snns capitalize magenta">
               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
             </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
+            <td class="snns capitalize white">
               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
             </td>
-            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize green">
+            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="snnn capitalize white">
               <br />
             </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
             <td class="snns capitalize green">
               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
@@ -84,14 +84,14 @@
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
             </td>
+            <td class="snss capitalize white">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize orange">
               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
             </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize green">
               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
             </td>
@@ -823,6 +823,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:25 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:35 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/basic_2.html b/helm/www/lambdadelta/basic_2.html
index 3ab92f7d0..4fb47c1a3 100644
--- a/helm/www/lambdadelta/basic_2.html
+++ b/helm/www/lambdadelta/basic_2.html
@@ -36,18 +36,18 @@
             <td class="snns capitalize italic magenta">
               <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
+            <td class="snns capitalize italic white">
               <a href="http://lambdadelta.info/specification.html">specification</a>
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
             <td class="snns capitalize italic green">
               <a href="http://lambdadelta.info/implementation.html">implementation</a>
             </td>
@@ -62,16 +62,16 @@
             <td class="snns capitalize magenta">
               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
             </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
+            <td class="snns capitalize white">
               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
             </td>
-            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize green">
+            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="snnn capitalize white">
               <br />
             </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
             <td class="snns capitalize green">
               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
@@ -84,14 +84,14 @@
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
             </td>
+            <td class="snss capitalize white">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize orange">
               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
             </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize green">
               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
             </td>
@@ -1384,6 +1384,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:24 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:35 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/css/ld_web.css b/helm/www/lambdadelta/css/ld_web.css
index b89905077..16fc502df 100644
--- a/helm/www/lambdadelta/css/ld_web.css
+++ b/helm/www/lambdadelta/css/ld_web.css
@@ -134,6 +134,10 @@ img.w3c {
 
 /* background colors ********************************************************/
 
+.white {
+  background-color:#ffffff; /* + 0 */
+}
+
 .gray {
   background-color:#dfdfdf; /* + 7/8 */
 }
diff --git a/helm/www/lambdadelta/documentation.html b/helm/www/lambdadelta/documentation.html
index 276f568ad..8d424517e 100644
--- a/helm/www/lambdadelta/documentation.html
+++ b/helm/www/lambdadelta/documentation.html
@@ -36,18 +36,18 @@
             <td class="snns capitalize italic magenta">
               <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
+            <td class="snns capitalize italic white">
               <a href="http://lambdadelta.info/specification.html">specification</a>
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
             <td class="snns capitalize italic green">
               <a href="http://lambdadelta.info/implementation.html">implementation</a>
             </td>
@@ -62,16 +62,16 @@
             <td class="snns capitalize magenta">
               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
             </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
+            <td class="snns capitalize white">
               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
             </td>
-            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize green">
+            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="snnn capitalize white">
               <br />
             </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
             <td class="snns capitalize green">
               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
@@ -84,14 +84,14 @@
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
             </td>
+            <td class="snss capitalize white">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize orange">
               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
             </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize green">
               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
             </td>
@@ -389,6 +389,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:24 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:35 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/ground_1.html b/helm/www/lambdadelta/ground_1.html
index d0d97a9e1..2af7b79ba 100644
--- a/helm/www/lambdadelta/ground_1.html
+++ b/helm/www/lambdadelta/ground_1.html
@@ -36,18 +36,18 @@
             <td class="snns capitalize italic magenta">
               <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
+            <td class="snns capitalize italic white">
               <a href="http://lambdadelta.info/specification.html">specification</a>
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
             <td class="snns capitalize italic green">
               <a href="http://lambdadelta.info/implementation.html">implementation</a>
             </td>
@@ -62,16 +62,16 @@
             <td class="snns capitalize magenta">
               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
             </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
+            <td class="snns capitalize white">
               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
             </td>
-            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize green">
+            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="snnn capitalize white">
               <br />
             </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
             <td class="snns capitalize green">
               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
@@ -84,14 +84,14 @@
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
             </td>
+            <td class="snss capitalize white">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize orange">
               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
             </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize green">
               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
             </td>
@@ -275,6 +275,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:25 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:35 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/ground_2.html b/helm/www/lambdadelta/ground_2.html
index 08790c17e..8ade57c70 100644
--- a/helm/www/lambdadelta/ground_2.html
+++ b/helm/www/lambdadelta/ground_2.html
@@ -36,18 +36,18 @@
             <td class="snns capitalize italic magenta">
               <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
+            <td class="snns capitalize italic white">
               <a href="http://lambdadelta.info/specification.html">specification</a>
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
             <td class="snns capitalize italic green">
               <a href="http://lambdadelta.info/implementation.html">implementation</a>
             </td>
@@ -62,16 +62,16 @@
             <td class="snns capitalize magenta">
               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
             </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
+            <td class="snns capitalize white">
               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
             </td>
-            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize green">
+            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="snnn capitalize white">
               <br />
             </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
             <td class="snns capitalize green">
               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
@@ -84,14 +84,14 @@
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
             </td>
+            <td class="snss capitalize white">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize orange">
               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
             </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize green">
               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
             </td>
@@ -328,6 +328,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:24 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:35 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/images/b15.png b/helm/www/lambdadelta/images/b15.png
new file mode 100644
index 000000000..114a1eb7d
Binary files /dev/null and b/helm/www/lambdadelta/images/b15.png differ
diff --git a/helm/www/lambdadelta/images/b3.png b/helm/www/lambdadelta/images/b3.png
index 3ed538923..eea2c8efa 100644
Binary files a/helm/www/lambdadelta/images/b3.png and b/helm/www/lambdadelta/images/b3.png differ
diff --git a/helm/www/lambdadelta/images/b4.png b/helm/www/lambdadelta/images/b4.png
index ccfd1a99a..9f2117e92 100644
Binary files a/helm/www/lambdadelta/images/b4.png and b/helm/www/lambdadelta/images/b4.png differ
diff --git a/helm/www/lambdadelta/images/b5.png b/helm/www/lambdadelta/images/b5.png
index 30cace1d1..877e505a6 100644
Binary files a/helm/www/lambdadelta/images/b5.png and b/helm/www/lambdadelta/images/b5.png differ
diff --git a/helm/www/lambdadelta/images/b6.png b/helm/www/lambdadelta/images/b6.png
index 39b8e2a0f..893007b26 100644
Binary files a/helm/www/lambdadelta/images/b6.png and b/helm/www/lambdadelta/images/b6.png differ
diff --git a/helm/www/lambdadelta/images/b8.png b/helm/www/lambdadelta/images/b8.png
index d2638f877..48b550ec7 100644
Binary files a/helm/www/lambdadelta/images/b8.png and b/helm/www/lambdadelta/images/b8.png differ
diff --git a/helm/www/lambdadelta/images/b9.png b/helm/www/lambdadelta/images/b9.png
index 0de559867..ff982a9ac 100644
Binary files a/helm/www/lambdadelta/images/b9.png and b/helm/www/lambdadelta/images/b9.png differ
diff --git a/helm/www/lambdadelta/implementation.html b/helm/www/lambdadelta/implementation.html
index a0d1b7ce4..3b43f18b0 100644
--- a/helm/www/lambdadelta/implementation.html
+++ b/helm/www/lambdadelta/implementation.html
@@ -36,18 +36,18 @@
             <td class="snns capitalize italic magenta">
               <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
+            <td class="snns capitalize italic white">
               <a href="http://lambdadelta.info/specification.html">specification</a>
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
             <td class="snns capitalize italic green">
               <a href="http://lambdadelta.info/implementation.html">implementation</a>
             </td>
@@ -62,16 +62,16 @@
             <td class="snns capitalize magenta">
               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
             </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
+            <td class="snns capitalize white">
               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
             </td>
-            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize green">
+            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="snnn capitalize white">
               <br />
             </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
             <td class="snns capitalize green">
               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
@@ -84,14 +84,14 @@
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
             </td>
+            <td class="snss capitalize white">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize orange">
               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
             </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize green">
               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
             </td>
@@ -269,6 +269,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:24 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:35 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/index.html b/helm/www/lambdadelta/index.html
index f5932556b..ce3e4a3b9 100644
--- a/helm/www/lambdadelta/index.html
+++ b/helm/www/lambdadelta/index.html
@@ -36,18 +36,18 @@
             <td class="snns capitalize italic magenta">
               <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
+            <td class="snns capitalize italic white">
               <a href="http://lambdadelta.info/specification.html">specification</a>
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
             <td class="snns capitalize italic green">
               <a href="http://lambdadelta.info/implementation.html">implementation</a>
             </td>
@@ -62,16 +62,16 @@
             <td class="snns capitalize magenta">
               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
             </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
+            <td class="snns capitalize white">
               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
             </td>
-            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize green">
+            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="snnn capitalize white">
               <br />
             </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
             <td class="snns capitalize green">
               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
@@ -84,14 +84,14 @@
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
             </td>
+            <td class="snss capitalize white">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize orange">
               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
             </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize green">
               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
             </td>
@@ -202,6 +202,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:24 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:35 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/news.html b/helm/www/lambdadelta/news.html
index f9de6ec95..212eb91d3 100644
--- a/helm/www/lambdadelta/news.html
+++ b/helm/www/lambdadelta/news.html
@@ -36,18 +36,18 @@
             <td class="snns capitalize italic magenta">
               <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
+            <td class="snns capitalize italic white">
               <a href="http://lambdadelta.info/specification.html">specification</a>
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
             <td class="snns capitalize italic green">
               <a href="http://lambdadelta.info/implementation.html">implementation</a>
             </td>
@@ -62,16 +62,16 @@
             <td class="snns capitalize magenta">
               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
             </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
+            <td class="snns capitalize white">
               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
             </td>
-            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize green">
+            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="snnn capitalize white">
               <br />
             </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
             <td class="snns capitalize green">
               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
@@ -84,14 +84,14 @@
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
             </td>
+            <td class="snss capitalize white">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize orange">
               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
             </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize green">
               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
             </td>
@@ -354,6 +354,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:24 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:35 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/specification.html b/helm/www/lambdadelta/specification.html
index 412740783..5cb1af416 100644
--- a/helm/www/lambdadelta/specification.html
+++ b/helm/www/lambdadelta/specification.html
@@ -36,18 +36,18 @@
             <td class="snns capitalize italic magenta">
               <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
+            <td class="snns capitalize italic white">
               <a href="http://lambdadelta.info/specification.html">specification</a>
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
-            <td class="snnn capitalize italic green">
+            <td class="snnn capitalize italic white">
               <br />
             </td>
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
             <td class="snns capitalize italic green">
               <a href="http://lambdadelta.info/implementation.html">implementation</a>
             </td>
@@ -62,16 +62,16 @@
             <td class="snns capitalize magenta">
               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
             </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
+            <td class="snns capitalize white">
               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
             </td>
-            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize green">
+            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="snnn capitalize white">
               <br />
             </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
             <td class="snns capitalize green">
               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
@@ -84,14 +84,14 @@
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
             </td>
+            <td class="snss capitalize white">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
+            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize orange">
               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
             </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
             <td class="snss capitalize green">
               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
             </td>
@@ -102,7 +102,7 @@
         </tbody>
       </table>
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="specifications">Computer-checked formal specifications <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b5.png" />
+    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="specifications">Computer-checked formal specifications <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b15.png" />
     </div>
     <div xmlns:ld="http://lambdadelta.info/" class="text">
       λδ is developed as a machine-checked digital specification.
@@ -328,6 +328,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:24 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 11 May 2015 15:05:35 +0200</div>
   </body>
 </html>
diff --git a/helm/www/lambdadelta/web/home/sitemap.tbl b/helm/www/lambdadelta/web/home/sitemap.tbl
index e3c2b0525..af3b9f773 100644
--- a/helm/www/lambdadelta/web/home/sitemap.tbl
+++ b/helm/www/lambdadelta/web/home/sitemap.tbl
@@ -11,12 +11,7 @@ table [
       [ @@("news#milestones" "milestones") * ]
       [ @@("news#visibility" "visibility") * ]
    }
-   class "orange" {
-      [ @@"documentation" * ] 
-      [ @@("documentation#v2" "version 2") * ]
-      [ @@("documentation#v1" "version 1") * ]
-   }
-   class "green" {
+   class "white" {
       [ @@"specification" * ] 
       [ @@("specification#v2" "version 2")
         "(" ^ @@("ground_2" "background") + "-" + 
@@ -29,6 +24,11 @@ table [
         "(" ^ @@("static/matita/lambdadelta/" "static HELM directory") ^ ")"
       * ]
    }
+   class "orange" {
+      [ @@"documentation" * ] 
+      [ @@("documentation#v2" "version 2") * ]
+      [ @@("documentation#v1" "version 1") * ]
+   }
    class "green" {
       [ @@"implementation" * ] 
       [ @@("implementation#lddl" "library")
diff --git a/helm/www/lambdadelta/web/home/specification.ldw.xml b/helm/www/lambdadelta/web/home/specification.ldw.xml
index 556549c39..407dc8054 100644
--- a/helm/www/lambdadelta/web/home/specification.ldw.xml
+++ b/helm/www/lambdadelta/web/home/specification.ldw.xml
@@ -7,7 +7,7 @@
 >
    <sitemap name="sitemap"/>
 
-   <section5 name="specifications">Computer-checked formal specifications</section5>
+   <section15 name="specifications">Computer-checked formal specifications</section15>
    <body>
       λδ is developed as a machine-checked digital specification.
       It comes in several versions listed in the next table,
diff --git a/helm/www/lambdadelta/xslt/ld_web_root.xsl b/helm/www/lambdadelta/xslt/ld_web_root.xsl
index f47a9a942..ee9d21053 100644
--- a/helm/www/lambdadelta/xslt/ld_web_root.xsl
+++ b/helm/www/lambdadelta/xslt/ld_web_root.xsl
@@ -72,6 +72,16 @@
    </div>
 </xsl:template>
 
+<xsl:template match="ld:section15">
+   <div class="head2dx" id="{@name}">
+      <xsl:apply-templates/>
+      <xsl:call-template name="sp"/>
+      <xsl:call-template name="butterfly">
+         <xsl:with-param name="name" select="15"/>
+      </xsl:call-template>
+   </div>
+</xsl:template>
+
 <xsl:template match="ld:subsection">
    <div class="head3sn" id="{@name}">
       <xsl:apply-templates/>