X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=inline;f=helm%2Fwww%2Flambdadelta%2Fosn.html;h=8348a7506bb64a0f9e7589acfc2eb30cd7aacf79;hb=21cdb9ffad749e518ca273641a180697c53ef4da;hp=e367a682d8de565f939d9cd4c5627c2628e0205b;hpb=6864d67d5a0e5950a4d5f744866e89215e08ace0;p=helm.git

diff --git a/helm/www/lambdadelta/osn.html b/helm/www/lambdadelta/osn.html
index e367a682d..8348a7506 100644
--- a/helm/www/lambdadelta/osn.html
+++ b/helm/www/lambdadelta/osn.html
@@ -31,10 +31,9 @@
       In order to meet these design goals, OSN pursues the following features.
    </div>
     <ul xmlns:ld="http://lambdadelta.info/">
-      <span class="red-mark">
-        <li>
-          <span class="alpha">
-            <a href="https://en.wikipedia.org/wiki/S-expression">Symbolic expressions</a>
+      <li class="red-mark">
+        <span class="alpha">
+          <a href="https://en.wikipedia.org/wiki/S-expression">Symbolic expressions</a>
       based on widely accepted syntactical conventions
       provide for a <span class="emph ">lightweight</span> and <span class="emph ">generic</span> grammar,
       which is both <span class="emph ">easy for machines to process</span>,
@@ -49,12 +48,11 @@
       Apparently, these features fall outside the scope of OSN,
       which targets the data structures of <span class="emph ">formal languages</span>. 
    </span>
-        </li>
-      </span>
-      <br />
-      <span class="blue-mark">
-        <li>
-          <span class="alpha">
+      </li>
+    </ul>
+    <ul xmlns:ld="http://lambdadelta.info/">
+      <li class="blue-mark">
+        <span class="alpha">
       Optionally <a href="https://en.wikipedia.org/wiki/Namespace">qualified</a> symbolic expressions 
       allow OSN texts to mix data from different domains preserving their own semantics
       because name conflicts can be avoided.
@@ -62,20 +60,18 @@
       domain-specific OSN applications can work as expected even if
       data from different domains is added to the text they process.
    </span>
-        </li>
-      </span>
-      <br />
-      <span class="green-mark">
-        <li>
-          <span class="alpha">
+      </li>
+    </ul>
+    <ul xmlns:ld="http://lambdadelta.info/">
+      <li class="green-mark">
+        <span class="alpha">
       The <a href="https://en.wikipedia.org/wiki/ASCII">US-ASCII</a> character set,
       extended to <a href="http://www.utf-8.com/">UTF-8</a> in
       free-form text strings for the convenience of human readers,
       makes OSN documents <span class="emph ">easy to visualize and transport</span> over communication media.
       OSN design aims at supporting <span class="emph ">application-independent</span> standard encodings.
    </span>
-        </li>
-      </span>
+      </li>
     </ul>
     <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="grammar">Grammar <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b6.png" />
     </div>
@@ -87,43 +83,49 @@
       and are available for extensions of OSN.
    </div>
     <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
+      <li class="">
       This token can represent the identifiers and the numerical constants of most programming languages:
       <br />
         <span class="emph ebnf">symbol = 1 * symbol-char ; <br />symbol-char = '+' | '-' | '.' | '0' | ... | '9' | 'A' | ... | 'Z' | '_' | '`' | 'a' | ... | 'z' ; </span>
       </li>
-      <br />
-      <li>
+    </ul>
+    <ul xmlns:ld="http://lambdadelta.info/">
+      <li class="">
       This token contains free-form text with commonly accepted escape sequences:
       <br />
         <span class="emph ebnf">string = '"' , * ( string-char | "'" | '\' escape ) , '"' ; <br />string-char = ( #0 | ... | #10FFFF ) - ( #0 | ... | #1F | "'" | '\' | '"' | #7F ) ; <br />escape = 1 * space | '"' | "'" | '(' | ')' | '0' | '\' | 'a' | 'b' | 'e' | 'f' | 'n' | 'r' | 't' | ( 'u' , 4 * 4 hex ) | 'v' | ( 'x' , 2 * 2 hex ) ; <br />space = #9 | ... | #D | #20 ; <br />hex = '0' | ... | '9' | 'A' | ... | 'F' | 'a' | ... | 'f' ; </span>
       </li>
-      <br />
-      <li>
+    </ul>
+    <ul xmlns:ld="http://lambdadelta.info/">
+      <li class="">
       This token is a widely used alternative of the former token:
       <br />
         <span class="emph ebnf">string-alt = "'" , * ( string-char | '"' | '\' escape ) , "'" ; </span>
       </li>
-      <br />
-      <li>
+    </ul>
+    <ul xmlns:ld="http://lambdadelta.info/">
+      <li class="">
       This token separates the qualifiers of a symbolic expression:
       <br />
         <span class="emph ebnf">sep = ':' ; </span>
       </li>
-      <br />
-      <li>
+    </ul>
+    <ul xmlns:ld="http://lambdadelta.info/">
+      <li class="">
       This token starts a compound symbolic expression:
       <br />
         <span class="emph ebnf">open = '(' | '&lt;' | '[' | '{' ; </span>
       </li>
-      <br />
-      <li>
+    </ul>
+    <ul xmlns:ld="http://lambdadelta.info/">
+      <li class="">
       This token ends a compound symbolic expression:
       <br />
         <span class="emph ebnf">close = ')' | '&gt;' | ']' | '}' ; </span>
       </li>
-      <br />
-      <li>
+    </ul>
+    <ul xmlns:ld="http://lambdadelta.info/">
+      <li class="">
       This token is ignored and separates the other tokens:
       <br />
         <span class="emph ebnf">gap = space | ',' | ';' | '=' ; </span>
@@ -134,19 +136,21 @@
       Spaces of the form <span class="emph ebnf">1 * gap </span> can appear between any pair of tokens.
    </div>
     <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
+      <li class="">
       An OSN text:
       <br />
         <span class="emph ebnf">text = * q-expr ; </span>
       </li>
-      <br />
-      <li>
+    </ul>
+    <ul xmlns:ld="http://lambdadelta.info/">
+      <li class="">
       A qualified symbolic expression:
       <br />
         <span class="emph ebnf">q-expr = * ( symbol , 1 * sep ) , expr ; </span>
       </li>
-      <br />
-      <li>
+    </ul>
+    <ul xmlns:ld="http://lambdadelta.info/">
+      <li class="">
       An unqualified symbolic expression:
       <br />
         <span class="emph ebnf">expr = symbol | string | string-alt | ( open , text , close ) ; </span>
@@ -193,6 +197,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 22 Jul 2016 19:08:41 +0200</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 24 Nov 2017 21:00:00 +0100</div>
   </body>
 </html>