--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>
+
+<page xmlns="http://lambdadelta.info/"
+ description = "\lambda\delta home page"
+ title = "\lambda\delta home page"
+ logo = "crux"
+ head = "cic:/matita/lambdadelta/ground/ (background for λδ version 2)"
+>
+ <sitemap name="sitemap"/>
+
+ <section4 name="summary">Summary of the Specification</section4>
+ <body>Here is a numerical account of the specification's contents
+ and its timeline.
+ </body>
+ <table name="ground_sum"/>
+
+ <news class="gamma" date="2020 February 27.">
+ Specification is released as an independent package (was ground_2).
+ </news>
+ <news class="beta" date="2020 January 6.">
+ Centralized xoa infrastructure removed.
+ </news>
+ <news class="beta" date="2018 June 6.">
+ Decentralized xoa infrastructure.
+ </news>
+ <news class="beta" date="2016 April 18.">
+ Generic rt-transition counter (rtc).
+ </news>
+ <news class="beta" date="2016 March 4.">
+ Platform-independent multiple relocation (rtmap).
+ </news>
+ <news class="alpha" date="2016 January 20.">
+ Multiple relocation with streams of naturals.
+ </news>
+ <news class="alpha" date="2015 October 11.">
+ Multiple relocation with lists of booleans.
+ </news>
+ <news class="alpha" date="2013 November 27.">
+ Natural numbers with infinity (ynat).
+ </news>
+ <news class="alpha" date="2011 August 10.">
+ Specification starts.
+ </news>
+
+ <section4 name="structure">Logical Structure of the Specification</section4>
+ <body>This table reports the specification's components and their planes.
+ </body>
+ <table name="ground_2_src"/>
+
+ <footer/>
+</page>