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+###################
+Helium Introduction
+###################
+
+.. index::
+  module:  Introduction
+
+.. contents::
+
+.. index::
+  single:  Introduction
+
+Introduction
+=============
+
+This is the user guide and technical description for Helium, an ANT based build framework used to build S60 based products.
+This documentation describes how to configure and use the Helium build framework from the point of view of an IDO integrator,
+a build manager, a helium contributor and subcon user.
+
+Helium contains all you need in order to create a work area, a build area, perform the compilation, link, create localised 
+variants, submit build information to Diamonds (used for statistical analysis), create Data Packages, 
+zip the files to create a release and much more. The aim is for helium to be used by every build and release team working on
+S60 products within Nokia. It is also used by some Subcons as part of the tool set given to them to allow subcons to build parts
+of the S60 code.
+
+Before you start reading about Helium it is very advisable that you are familiar with ANT_ and how it works so  
+click on this `ANT link`_ if you are not familiar with ANT_.
+
+.. _ANT link: http://ant.apache.org/
+.. _ANT: http://ant.apache.org/
+
+Ant makes great use of XML_ files for its configuration so if you are unfamiliar with XML_ files it is recommended that you read the 
+information at the XML_ link.
+
+.. _XML: http://www.w3.org/XML/
+
+There are various parts of this documentation that are only of interest to certain users (in particular the Helium integrator), 
+it is hoped that eventually there will 
+be separate contents lists for the different users, but for the time being this is not possible, so bare with us.
+ 
+
+NOTE: for best viewing you should use Windows Internet Explorer 7.0 or newer as version 6.0 has some problems with display of the
+navigation bar and contents list.
+
+
+.. index::
+  single:  Vision
+
+Vision
+=========
+
+The Helium vision is to fulfill the following demands:
+
+ * A "common unified toolset".
+ * Easy to use and configure for all different builds.
+   
+   * Fully automated builds.
+   * Verbose and clear messages.
+ 
+ * Light.
+ * Simple things should be easy to do, complex things should be possible.
+
+.. index::
+  single:  Background
+  
+Background
+============
+
+Helium was developed from a need to reduce "reinventing the wheel" for build tools. It was based on the mc_tools project which had the same goal within the former MC organization.
+
+.. index::
+  single:  Why Ant?
+  
+Why Ant?
+==========
+
+Helium is fundamentally based on Apache ANT_. Why was ANT_ chosen when there were many other similar frameworks inside Nokia,
+such as sbt, isis_build and TrombiBuild. The main reason is that while the other toolkits were developed inside Nokia,
+ANT_ is an open source tool from Apache, based on relatively simple XML_ files that define the build steps. 
+Through leveraging the power of open source Helium has integrated a large amount of functionality that would have taken
+much longer to develop in-house, as well as benefit from existing, high-quality documentation.
+