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diff --git a/doc/white-papers/calendar/calendar.sgml b/doc/white-papers/calendar/calendar.sgml
deleted file mode 100644
index 2cb3132e2b..0000000000
--- a/doc/white-papers/calendar/calendar.sgml
+++ /dev/null
@@ -1,209 +0,0 @@
-<!doctype article PUBLIC "-//Davenport//DTD DocBook V3.0//EN" [
-<!entity Evolution "<application>Evolution</application>">
-<!entity CUA "<acronym>CUA</acronym>">
-<!entity PCS "<acronym>PCS</acronym>">
-<!entity Bonobo "<application>Bonobo</application>">
-<!entity CORBA "<acronym>CORBA</acronym>">
-<!entity GTK "<acronym>GTK+</acronym>">
-]>
-
-<article class="whitepaper" id="calendar">
-
-  <artheader>
-    <title>&Evolution; Calendaring Framework</title>
-
-    <authorgroup>
-      <author>
-	<firstname>Federico</firstname>
-	<surname>Mena Quintero</surname>
-	<affiliation>
-	  <address>
-	    <email>federico@helixcode.com</email>
-	  </address>
-	</affiliation>
-      </author>
-    </authorgroup>
-
-    <copyright>
-      <year>2000</year>
-      <holder>Helix Code, Inc.</holder>
-    </copyright>
-
-    <abstract>
-      <para>
-	The &Evolution; groupware suite provides a framework for
-	developing calendaring applications, as well as a graphical
-	calendar client and a personal calendar server.  This white
-	paper describes the architecture of the &Evolution;
-	calendaring framework.
-      </para>
-    </abstract>
-  </artheader>
-
-  <!-- Introduction -->
-
-  <sect1 id="introduction">
-    <title>Introduction</title>
-
-    <para>
-      Calendaring is an important part of a groupware suite.  A
-      calendaring framework will allow a user to keep a personal
-      calendar and have several applications use it.  Such
-      applications could be a graphical calendar client that the user
-      employs to schedule appointments and keep track of his time, a
-      <productname>Palm Pilot</productname> synchronization client, or
-      a simple alarm or reminder utility.  A comprehensive calendaring
-      framework will also allow multiple users to schedule
-      appointments between each other; for example, a project director
-      may want to schedule a weekly meeting with the rest of the
-      project members, or a person who owns a large house may want to
-      schedule a big party with his friends.  The attendees will then
-      want to reply with messages such as, &ldquo;I will
-      attend&rdquo;, or &ldquo;I will attend only if the proposed time
-      is changed&rdquo;.
-    </para>
-
-    <para>
-      The &Evolution; groupware suite provides a framework for
-      developing calendaring applications, as well as a graphical
-      calendar client or calendar user agent (&CUA;) and a personal
-      calendar server (&PCS;).
-    </para>
-
-    <para>
-      The following sections explain the basic calendaring framework,
-      the functions of the calendar user agent and the personal
-      calendar server, and the relationship between the two.
-    </para>
-  </sect1>
-
-  <!-- Personal Calendar Server -->
-
-  <sect1 id="pcs">
-    <title>Personal Calendar Server</title>
-
-    <para>
-      The personal calendar server (&PCS;) provides centralized
-      management and storage of a user's personal calendar.  Multiple
-      clients can connect to the &PCS; simultaneously to query and
-      modify the user's calendar in a synchronized fashion.  The main
-      features of the &PCS; are as follows:
-    </para>
-
-    <formalpara>
-      <title>Storage</title>
-
-      <para>
-	The &PCS; is responsible for loading and saving calendars.
-	Centralizing the loading and saving functionality allows
-	multiple clients to use the same calendar at the same time
-	without having to worry about each other.
-      </para>
-    </formalpara>
-
-    <formalpara>
-      <title>Basic Queries</title>
-
-      <para>
-	The &PCS; provides functions to do basic queries on a
-	calendar, for example, a client can ask the server for a list
-	of all the appointments in the calendar, or for all the data
-	for a specific appointment.
-      </para>
-    </formalpara>
-
-    <formalpara>
-      <title>Recurrence and Alarm Queries</title>
-
-      <para>
-	Clients can ask the &PCS; for a list of the appointments that
-	occur within a specified time range; for example a graphical
-	client that has a per-week view could ask the &PCS; for all
-	the appointments that occur in a particular week.  This
-	includes multiple occurrences of a single recurring event; for
-	example, the object for &ldquo;a 1-hour meeting that occurs on
-	every Tuesday and Thursday&rdquo; is represented inside the
-	&PCS; as a single event with a recurrence rule.  Similarly,
-	clients can ask the &PCS; for a list of events that have
-	alarms that trigger within a specified time range.
-      </para>
-    </formalpara>
-
-    <formalpara>
-      <title>Notification of Changes</title>
-
-      <para>
-	This is the most important function of the &PCS;, as it allows
-	multiple calendar clients to maintain a unified view of the
-	calendar between the server and themselves.  When a client
-	asks the &PCS; to modify or remove an event, the &PCS;
-	notifies all the clients that are connected to it about the
-	change.  The policy is that &ldquo;the server is always
-	right&rdquo;; clients can act as dumb views onto the
-	calendar's data and they will be notified by the &PCS; when
-	something changes.
-      </para>
-    </formalpara>
-  </sect1>
-
-  <!-- Calenar User Agent -->
-
-  <sect1 id="cua">
-    <title>Calendar User Agent</title>
-
-    <para>
-      A calendar user agent (&CUA;) is a program that lets a user
-      manipulate a calendar.  &Evolution; provides an attractive,
-      graphical calendar client that communicates with the &Evolution;
-      personal calendar server.
-    </para>
-
-    <para>
-      The &Evolution; calendar client just provides a view onto the
-      data that is stored and managed by the personal calendar server.
-      The calendar client does not perform direct manipulations on a
-      calendar's data; instead it offloads those requests to the
-      calendar server, which takes care of making the appropriate
-      modifications in the calendar and then notifies all the clients
-      about the changes.
-    </para>
-  </sect1>
-
-  <!-- Calendar Client Library -->
-
-  <sect1 id="client-lib">
-    <title>Calendar Client Library</title>
-
-    <para>
-      Communication between the personal calendar server and calendar
-      clients is defined by a set of &Bonobo; &CORBA; interfaces.
-      Clients can be written by implementing the client-side
-      <classname>Listener</classname> interface, which defines the
-      notification callbacks that the PCS uses to inform clients about
-      changes to the calendar.
-    </para>
-
-    <para>
-      As a convenience for &GTK; programmers, &Evolution; also
-      includes a library which provides a
-      <classname>CalClient</classname> class which can be used for
-      communication with the personal calendar server.  Objects of
-      this class automatically contact the PCS when they are created.
-      <classname>CalClient</classname> provides functions to request
-      changes in the calendar, and it also emits signals when it gets
-      notification about changes from the PCS.  This makes it easy and
-      convenient to write calendar clients for &Evolution; using
-      &GTK;.
-    </para>
-
-    <para>
-      The implementation of the <classname>CalClient</classname> class
-      simply wraps the &Evolution; &CORBA; interfaces for calendaring
-      with a familiar-looking &GTK; object.  Calls to the
-      <classname>Listener</classname> interface get translated to
-      signal emissions from the <classname>CalClient</classname>, thus
-      shielding programmers from the details of the &CORBA;
-      interfaces.
-    </para>
-  </sect1>
-</article>
diff --git a/doc/white-papers/mail/camel.sgml b/doc/white-papers/mail/camel.sgml
deleted file mode 100644
index 5f5ea27a98..0000000000
--- a/doc/white-papers/mail/camel.sgml
+++ /dev/null
@@ -1,356 +0,0 @@
-<!doctype article PUBLIC "-//Davenport//DTD DocBook V3.0//EN" [
-<!entity Evolution "<application>Evolution</application>">
-<!entity Camel "Camel">
-]>
-
-<article class="whitepaper" id="camel">
-
-  <artheader>
-    <title>The &Camel; Messaging Library</title>
-
-    <authorgroup>
-      <author>
-	<firstname>Jeffrey</firstname>
-	<surname>Stedfast</surname>
-	<affiliation>
-	  <address>
-	    <email>fejj@helixcode.com</email>
-	  </address>
-	</affiliation>
-      </author>
-
-      <author>
-	<firstname>Michael</firstname>
-	<surname>Zucchi</surname>
-	<affiliation>
-	  <address>
-	    <email>notzed@helixcode.com</email>
-	  </address>
-	</affiliation>
-      </author>
-
-      <author>
-	<firstname>Dan</firstname>
-	<surname>Winship</surname>
-	<affiliation>
-	  <address>
-	    <email>danw@helixcode.com</email>
-	  </address>
-	</affiliation>
-      </author>
-
-      <author>
-	<firstname>Bertrand</firstname>
-	<surname>Guiheneuf</surname>
-	<affiliation>
-	  <address>
-	    <email>bertrand@helixcode.com</email>
-	  </address>
-	</affiliation>
-      </author>
-    </authorgroup>
-
-    <copyright>
-      <year>2000, 2001</year>
-      <holder>Ximian, Inc.</holder>
-    </copyright>
-
-  </artheader>
-
-  <sect1 id="introduction">
-    <title>Introduction</title>
-
-    <para>
-      &Camel; is a generic messaging library. It is being used as the
-      back end for the mail component of &Evolution;. The name
-      "&Camel;" is an acronym; it refers to the fact that the
-      library is capable of going several days without food or water.
-      It means : Camel's Acronym Makes Everyone Laugh.
-    </para>
-
-    <para>
-      &Camel;'s initial design is heavily based on Sun's
-      <trademark>JavaMail</trademark> API. It uses the Gtk+ object
-      system, and many of its classes are direct analags of JavaMail
-      classes. Its design has also been influenced by the features of
-      IMAP, and the limitations of the standard UNIX mbox mail store,
-      which set some of the boundaries on its requirements and
-      extensibility.
-    </para>
-
-    <para>
-      &Camel; sees all message repositories as stores containing
-      folders. These folders in turn contain the messages the client
-      actually accesses. The use of such a unified interface allows
-      the client applications to be very extensible. &Camel; includes
-      an external provider mechanism which allows applications to
-      dynamically load and use protocols which were not available when
-      the application was initially written.
-    </para>
-
-    <para>
-      The abstract store/folder mechanism is a powerful and versatile
-      way of accessing messages. No particular asumptions are made on
-      the client side, thus allowing new ways of managing the
-      messages. For example, the messages stored in the folders don't
-      necessarily have to share some common physical location. The
-      folder can be a purely virtual folder, containing only
-      references to the actual messages. This is used by the "vFolder"
-      provider, which allows you select messages meeting particular
-      criteria and deal with them as a group.
-    </para>
-
-    <para>
-      In addition to these possibilities, &Camel; has full MIME
-      support. &Camel; MIME messages are lightweight objects
-      representing the MIME skeleton of the actual message. The data
-      contained in the subparts are never stored in memory except when
-      they are actually needed. The application, when accessing the
-      various MIME objects contained in the message (text parts,
-      attachments, embedded binary objects ...) asks &Camel; for a
-      stream that it can read data from. This scheme is particularly
-      useful with the IMAP provider. IMAP has strong MIME support
-      built-in, which allows &Camel; to download only the parts of
-      messages that it actually needs: attachments need not be
-      downloaded until they are viewed, and unnecessary
-      "multipart/alternative" parts will never be read off the server.
-    </para>
-  </sect1>
-
-  <sect1 id="overview">
-    <title>Overview</title>
-
-    <graphic format="gif" fileref="camel"></graphic>
-
-    <para>
-      To begin using &Camel;, an application first creates subclassed
-      <classname>CamelSession</classname> object. This object is used
-      to store application defaults, and to coordinate communication
-      between providers and the application.
-    </para>
-
-    <para>
-      A <classname>CamelProvider</classname> is a dynamically-loadable
-      module that provides functionality associated with a specific
-      service. Examples of providers are POP, IMAP and SMTP. Providers
-      include subclasses of the various other &Camel; classes for
-      accessing and manipulating messages.
-    </para>
-
-    <para>
-      <classname>CamelService</classname> is an abstract class for
-      describing a connection to a local or remote service. It
-      currently has two subclasses: <classname>CamelStore</classname>,
-      for services that store messages (such as IMAP servers and mbox
-      files), and <classname>CamelTransport</classname>, for services
-      that deliver messages (such as SMTP or a local MTA). A provider
-      could also be both a store and a transport, as in the case of
-      NNTP.
-    </para>
-
-    <para>
-      A <classname>CamelStore</classname> contains some number of
-      <classname>CamelFolder</classname> objects, which in turn
-      contain messages. A <classname>CamelFolder</classname> provides
-      a <classname>CamelFolderSummary</classname> object, which
-      includes details about the subject, date, and sender of each
-      message in the folder. The folder also includes the messages
-      themselves, as subclasses of <classname>CamelMedium</classname>.
-    </para>
-
-    <para>
-      Email messages are represented by the
-      <classname>CamelMimeMessage</classname> class, a subclass of
-      <classname>CamelMedium</classname>. This class includes
-      operations for accessing RFC822 and MIME headers, accessing
-      subparts of MIME messages, encoding and decoding Base64 and
-      Quoted-Printable, etc.
-    </para>
-
-    <para>
-      <classname>CamelTransport</classname> includes methods for
-      delivering messages. While the abstract
-      <function>CamelTransport::send</function> method takes a
-      <classname>CamelMedium</classname>, its subclasses may only be
-      able to deliver messages of specific
-      <classname>CamelMedium</classname> subclasses. For instance,
-      <classname>CamelSendmailTransport</classname> requires a
-      <classname>CamelMimeMessage</classname>, because it needs a
-      message that includes a "To:" header. A hypothetical
-      <classname>CamelNNTPTransport</classname> would need a
-      <classname>CamelNewsMessage</classname>, which would have a
-      "Newsgroups:" header.
-    </para>
-
-    <para>
-      The content of messages are referred to using
-      <classname>CamelStream</classname> and its subclasses. In the
-      case of an mbox-based store, the
-      <classname>CamelStream</classname> would abstract the operation
-      of reading the correct section of the mbox file. For IMAP,
-      reading off the <classname>CamelStream</classname> might result
-      in commands being issued to the remote IMAP server and data
-      being read off a socket.
-    </para>
-
-    <para>
-      The final major class in &Camel; is
-      <classname>CamelException</classname>, which is used to
-      propagate information about errors. Many methods take a
-      <classname>CamelException</classname> as an argument, which the
-      caller can then check if an error occurs. It includes both a
-      numeric error code which can be interpreted by the program, and
-      a text error message that can be displayed to the user.
-    </para>
-  </sect1>
-
-  <sect1 id="classes">
-    <title>Major Subcomponents</title>
-
-    <sect2 id="store">
-      <title>The Message Store</title>
-
-      <para>
-        A <classname>CamelStore</classname> inherits the ability to
-        connect and authenticate to a service from its parent class,
-        <classname>CamelService</classname>. It then adds the ability
-        to retrieve folders. A store must contain at least one folder,
-        which can be retrieved with
-        <function>CamelStore::get_default_folder</function>. There are
-        also methods to retrieve the "top-level" folder (for
-        hieararchical stores), and to retrieve an arbitrary folder by
-        name.
-      </para>
-
-      <para>
-        All <classname>CamelFolder</classname>s must implement certain
-        core operations, most notably generating a summary and
-        retrieving and deleting messages. A
-        <classname>CamelFolder</classname> must assign a permanently
-        unique identifier to each message it contains. Messages can
-        then be retrieved via
-        <function>CamelFolder::get_message</function>.
-      </para>
-
-      <para>
-        Folders must also implement the
-        <function>get_parent_folder</function> and
-        <function>list_subfolders</function> methods. For stores that
-        don't allow multiple folders, they would return NULL and an
-        empty list, respectively. Stores that do allow multiple
-        folders will also define methods for creating and deleting
-        folders, and for moving messages between them (assuming the
-        folders are writable).
-      </para>
-
-      <para>
-        Folders that support searching can define the
-        <function>search_by_expression</function> method. For mbox
-        folders, this is implemented by indexing the messages with the
-        ibex library and using that to search them later. For IMAP
-        folders, this uses the IMAP SEARCH command. Other folder types
-        might not be able to implement this functionality, in which
-        case users would not be able to do full-content searches on
-        them.
-      </para>
-    </sect2>
-
-    <sect2 id="messages">
-      <title>Messages</title>
-
-      <para>
-        As mentioned before, messages are represented by subclasses of
-        <classname>CamelMedium</classname>.
-        <classname>CamelMedium</classname> itself is a subclass of
-        <classname>CamelDataWrapper</classname>, a generic class for
-        connecting a typed data source to a data sink.
-        <classname>CamelMedium</classname> adds the concept of message
-        headers versus message body.
-        (<classname>CamelDataWrapper</classname> has one other
-        important subclass, <classname>CamelMultipart</classname>,
-        which is used to provide separate access to the multiple
-        independent parts of a multipart MIME type.)
-        <classname>CamelMedium</classname>'s subclasses provide more
-        specialized handling of various headers:
-        <classname>CamelMimePart</classname> adds special handling for
-        the &ldquot;Content-*&rdquot; headers in MIME messages, and
-        its subclass <classname>CamelMimeMessage</classname> adds
-        handling for the RFC822 headers.
-      </para>
-
-      <graphic format="gif" fileref="mimemessage"></graphic>
-
-      <para>
-        Consider a message with two parts: a text part (in both plain
-        text and HTML), and an attached image:
-
-	<programlisting>
-
-	  From: Dan Winship &lt;danw@helixcode.com&gt;
-	  To: Matt Loper &lt;matt@helixcode.com&gt;
-	  Subject: the Camel white paper
-	  MIME-Version: 1.0
-	  Content-Type: multipart/mixed;
-		boundary="jhTYrnsRrdhDFGa"
-
-	  This is a multi-part message in MIME format.
-	  --jhTYrnsRrdhDFGa
-	  Content-Type: multipart/alternative;
-		boundary="sFSenbAFDSgDfg"
-
-	  --sFSenbAFDSgDfg
-	  Content-Type: text/plain
-
-	  Hey, Matt
-
-	  Check out this graphic...
-
-	  -- Dan
-
-	  --sFSenbAFDSgDfg
-	  Content-Type: text/html
-
-	  Hey, Matt&lt;br&gt;
-	  &lt;br&gt;
-	  Check out this graphic...&lt;br&gt;
-	  &lt;br&gt;
-	  -- Dan&lt;br&gt;
-	  &lt;br&gt;
-	  --sFSenbAFDSgDfg--
-
-	  --jhTYrnsRrdhDFGa
-	  Content-Type: image/png
-	  Content-Transfer-Encoding: base64
-
-	  F4JLw0ORrkRa8AwAMQJLAaI3UDIGsco9RAaB92...
-	  --jhTYrnsRrdhDFGa--
-	</programlisting>
-
-	<para>
-	  In &Camel;, this would be represented as follows:
-	</para>
-
-        <graphic fileref="samplemsg"></graphic>
-      </sect2>
-
-      <sect2 id="streams">
-        <title>Streams</title>
-
-	<para>
-	  Streams are a generic data transport layer. Two basic stream
-	  classes are <classname>CamelStreamFs</classname>, for
-	  reading and writing files, and
-	  <classname>CamelStreamMem</classname>, for reading from and
-	  writing to objects that are already in memory.
-	</para>
-
-	<para>
-	  Streams can also be filtered. So a CamelMimePart
-	  containing base64-encoded data can filter its output through
-	  CamelMimeFilterBasic. Other parts of the application that want
-	  to read its data will never need to even realize that the
-	  original data was encoded.
-	</para>
-      </sect2>
-
-</article>
diff --git a/doc/white-papers/mail/ibex.sgml b/doc/white-papers/mail/ibex.sgml
deleted file mode 100644
index dcb8f5ca4b..0000000000
--- a/doc/white-papers/mail/ibex.sgml
+++ /dev/null
@@ -1,158 +0,0 @@
-<!doctype article PUBLIC "-//Davenport//DTD DocBook V3.0//EN" [
-<!entity Evolution "<application>Evolution</application>">
-<!entity Camel "Camel">
-<!entity Ibex "Ibex">
-]>
-
-<article class="whitepaper" id="ibex">
-
-  <artheader>
-    <title>Ibex: an Indexing System</title>
-
-    <authorgroup>
-      <author>
-	<firstname>Dan</firstname>
-	<surname>Winship</surname>
-	<affiliation>
-	  <address>
-	    <email>danw@helixcode.com</email>
-	  </address>
-	</affiliation>
-      </author>
-    </authorgroup>
-
-    <copyright>
-      <year>2000</year>
-      <holder>Helix Code, Inc.</holder>
-    </copyright>
-
-  </artheader>
-
-  <sect1 id="introduction">
-    <title>Introduction</title>
-
-    <para>
-      &Ibex; is a library for text indexing. It is being used by
-      &Camel; to allow it to quickly search locally-stored messages,
-      either because the user is looking for a specific piece of text,
-      or because the application is contructing a vFolder or filtering
-      incoming mail.
-    </para>
-  </sect1>
-
-  <sect1 id="goals">
-    <title>Design Goals and Requirements for Ibex</title>
-
-    <para>
-      The design of &Ibex; is based on a number of requirements.
-
-    <itemizedlist>
-      <listitem>
-        <para>
-	  First, obviously, it must be fast. In particular, searching
-	  the index must be appreciably faster than searching through
-	  the messages themselves, and constructing and maintaining
-	  the index must not take a noticeable amount of time.
-	</para>
-      </listitem>
-
-      <listitem>
-        <para>
-	  The indexes must not take up too much space. Many users have
-	  limited filesystem quotas on the systems where they read
-	  their mail, and even users who read mail on private machines
-	  have to worry about running out of space on their disks. The
-	  indexes should be able to do their job without taking up so
-	  much space that the user decides he would be better off
-	  without them.
-	</para>
-
-	<para>
-	  Another aspect of this problem is that the system as a whole
-	  must be clever about what it does and does not index:
-	  accidentally indexing a "text" mail message containing
-	  uuencoded, BinHexed, or PGP-encrypted data will drastically
-	  affect the size of the index file. Either the caller or the
-	  indexer itself has to avoid trying to index these sorts of
-	  things.
-	</para>
-      </listitem>
-
-      <listitem>
-        <para>
-	  The indexing system must allow data to be added to the index
-	  incrementally, so that new messages can be added to the
-	  index (and deleted messages can be removed from it) without
-	  having to re-scan all existing messages.
-	</para>
-      </listitem>
-
-      <listitem>
-        <para>
-	  It must allow the calling application to explain the
-	  structure of the data however it wants to, rather than
-	  requiring that the unit of indexing be individual files.
-	  This way, &Camel; can index a single mbox-format file and
-	  treat it as multiple messages.
-	</para>
-      </listitem>
-
-      <listitem>
-        <para>
-	  It must support non-ASCII text, given that many people send
-	  and receive non-English email, and even people who only
-	  speak English may receive email from people whose names
-	  cannot be written in the US-ASCII character set.
-	</para>
-      </listitem>
-    </itemizedlist>
-
-    <para>
-      While there are a number of existing indexing systems, none of
-      them met all (or even most) of our requirements.
-    </para>
-  </sect1>
-
-  <sect1 id="implementation">
-    <title>The Implementation</title>
-
-    <para>
-      &Ibex; is still young, and many of the details of the current
-      implementation are not yet finalized.
-    </para>
-
-    <para>
-      With the current index file format, 13 megabytes of Info files
-      can be indexed into a 371 kilobyte index file&mdash;a bit under
-      3% of the original size. This is reasonable, but making it
-      smaller would be nice. (The file format includes some simple
-      compression, but <application>gzip</application> can compress an
-      index file to about half its size, so we can clearly do better.)
-    </para>
-
-    <para>
-      The implementation has been profiled and optimized for speed to
-      some degree. But, it has so far only been run on a 500MHz
-      Pentium III system with very fast disks, so we have no solid
-      benchmarks.
-    </para>
-
-    <para>
-      Further optimization (of both the file format and the in-memory
-      data structures) awaits seeing how the library is most easily
-      used by &Evolution;: if the indexes are likely to be kept in
-      memory for long periods of time, the in-memory data structures
-      need to be kept small, but the reading and writing operations
-      can be slow. On the other hand, if the indexes will only be
-      opened when they are needed, reading and writing must be fast,
-      and memory usage is less critical.
-    </para>
-
-    <para>
-      Of course, to be useful for other applications that have
-      indexing needs, the library should provide several options, so
-      that each application can use the library in the way that is
-      most suited for its needs.
-    </para>
-  </sect1>
-</article>
diff --git a/doc/white-papers/widgets/e-table.sgml b/doc/white-papers/widgets/e-table.sgml
deleted file mode 100644
index 5ff4faf2ae..0000000000
--- a/doc/white-papers/widgets/e-table.sgml
+++ /dev/null
@@ -1,279 +0,0 @@
-<!doctype article PUBLIC "-//Davenport//DTD DocBook V3.0//EN" [
-<!entity Evolution "<application>Evolution</application>">
-<!entity ETable "<classname>ETable</classname>">
-<!entity ETableModel "<classname>ETableModel</classname>">
-<!entity ETableSimple "<classname>ETableSimple</classname>">
-<!entity ETableHeader "<classname>ETableHeader</classname>">
-<!entity ETableSpecification "<classname>ETableSpecification</classname>">
-<!entity ETableCol "<classname>ETableCol</classname>">
-]>
-
-<article class="whitepaper" id="e-table">
-
-  <artheader>
-    <title>The ETable Widget</title>
-
-    <authorgroup>
-      <author>
-	<firstname>Chris</firstname>
-	<surname>Lahey</surname>
-	<affiliation>
-	  <address>
-	    <email>clahey@helixcode.com</email>
-	  </address>
-	</affiliation>
-      </author>
-      <author>
-	<firstname>Miguel</firstname>
-	<surname>de Icaza</surname>
-	<affiliation>
-	  <address>
-	    <email>miguel@helixcode.com</email>
-	  </address>
-	</affiliation>
-      </author>
-    </authorgroup>
-
-    <copyright>
-      <year>2000</year>
-      <holder>Helix Code, Inc.</holder>
-    </copyright>
-
-  </artheader>
-
-  <sect1 id="introduction">
-    <title>Introduction</title>
-
-    <para>
-      &ETable; is a table widget on steroids. It is intended to provide
-      all the table functionality needed throughout &Evolution;, and
-      hopefully be general purpose enough to be used in other projects.
-    </para>
-
-    <para>
-      &ETable; provides a lot of interactive control over the data in the
-      table.  Without any work from the programmer, &ETable; provides
-      rearrangeable columns and editable data.  When finished, &ETable; will
-      also provide, again with no programmer intervention, easy interactive
-      sorting and grouping.  
-    </para>
-
-    <para>
-      &ETable; gives you a great deal of functionality, flexibility, and
-      power. Most of this power is internal to the widget, but some of
-      the flexibility requires a bit of work by the programmer.
-      However, once you learn it, &ETable; is not very hard at all to
-      use.
-    </para>
-
-    <para>
-      &ETable;'s power comes from the fact that it is fully
-      model/view/controller based.  Various models are involved into
-      the process of rendering the information, and various views are
-      provided.  The programmer has a wide range of options: from the
-      most finely hand-tuned table to a generic all-encompasing widget
-      that takes over most of tasks.  It is up to the programmer: he
-      can use the simple to use &ETable; widget that takes care of
-      everything in a generic way, or he can use the various
-      components to roll his own tabular display.
-    </para>
-
-    <para>
-      &ETable; ships with a standard set of information renderers:
-      strings, bitmaps, toggle-buttons, check-boxes, and multi-line
-      strings.  But the programmer can write and implement his own
-      renderer for his information.  This means that by default
-      &ETable; provides the basic display facilities that programmers
-      required, but they offer the programmer a complete freedom to
-      incorporate new cell renderers.
-    </para>
-    
-  </sect1>
-
-  <sect1 id="model">
-    <title>ETableModel</title>
-
-    <para>
-      The data back end for the &ETable; is an &ETableModel;. The
-      &ETableModel is an abstract interface that acts as the
-      information repository for the various &ETable components.
-    </para>
-    
-    <para>
-      To use &ETable; you have to create a subclass of the abstract
-      &ETableModel; class.  However, to save you the work of defining
-      a new <classname>GtkClass</classname> every time you use
-      &ETable, there is a predefined subclass of &ETableModel; called
-      &ETableSimple; which simply takes a list of function callbacks
-      to perform the various operations.
-    </para>
-
-  </sect1>
-    
-  <sect1 id="columns">
-    <title>Columns</title>
-
-    <para>
-      There are two different meanings to the word "column". The first
-      is the model column (defined by the &ETableCol: object). A model
-      column describes how it maps to the column in the &ETableModel;
-      as well as containing information about its properties (name,
-      resizability, resize dimensions, and a renderer for this
-      specific columns). 
-    </para>
-
-    <para>
-      &ETable; distinguishes between a model column index, and a view
-      column index.  The former reflects the column in which the data
-      is stored in the &ETableModel;  The later represents the actual
-      location at which the column is being displayed in the screen.
-    </para>
-
-    <para>
-      Each view column index corresponds to a specific model column,
-      though a model column may have any number of view columns
-      associated with it (including zero).  For example the same
-      column might be rendered twice, or the data from one column
-      could be used to display different bits of information
-    </para>
-
-    <para>
-      The view column does not necessarily depend on only one model
-      column. In some cases, the view column renderer can be given a
-      reference to another model column to get extra information about
-      its display. For example, a mail program could display deleted
-      messages with a line through them by creating a model column
-      with no corresponding view column that told whether or not the
-      message is deleted, and then having the text column
-      strikethrough the display if the invisible column had a value
-      corresponding to "deleted".
-    </para>
-
-    <para>
-      The view column also specifies a few other pieces of
-      information. One piece of information is the renderer. &ETable;
-      provides a number of renderers to choose from, or you can write
-      your own. Currently, there are renderers for text, image sets,
-      and checkboxes.
-    </para>
-
-    <para>
-      The view column also includes information about the header.
-      There are two types of headers: text, and pixbuf. The first
-      allows you to specify a string which is rendered in the header.
-      The second allows you to specify an image to copy into the
-      header.
-    </para>
-  </sect1>
-
-  <sect1 id="header">
-    <title>Header</title>
-
-    <para>
-      The &ETableHeader; represents the header information for the
-      table. The &ETableHeader; is used in two different ways. The
-      first is the in the <structfield>full_header</structfield>
-      element of an &ETable;. This is the list of possible columns in
-      the view. You add each of your columns to this &ETableHeader;
-      and then pass it into the &ETable;.
-    </para>
-
-    <para>
-      The second use is completely internal. &ETable; uses another
-      &ETableHeader; to store the actual displayed columns. Many of
-      the &ETableHeader; functions are for this purpose. The only
-      functions that users of the library should need to use are
-      <function>e_table_header_new</function> and
-      <function>e_table_header_add_col</function>.
-    </para>
-  </sect1>
-
-  <sect1 id="layout">
-    <title>Layout Specification</title>
-
-    <para>
-      &ETable; uses an &ETableSpecification; to layout the columns of
-      the widget. The &ETableSpecification; is specified as XML data
-      passed into the &ETable; as a string.
-    </para>
-
-    <para>
-      The most powerful part of the &ETableSpecification; is that when
-      finished, &ETable; will allow you to get a copy of an
-      &ETableSpecification; that describes the current view of the
-      tree. This allows the developer to save the current view so that
-      next time the user opens this table, they find it in exactly the
-      state that they left it.
-    </para>
-
-    <para>
-      The XML specification allows for a number of things. First, it
-      allows you to pick a set of default columns to be shown. Thus,
-      even if you had hundreds of pieces of data, you could choose to
-      only display a few that fit on the screen by default.
-    </para>
-
-    <para>
-      The second major thing that the &ETableSpecification; allows you
-      to specify is the column grouping and sorting. &ETable; has a
-      powerful mechanism for allowing the user to choose columns to
-      group by, thus allowing multiple columns of sorting, as well as
-      visual grouping of similar elements and interactive selection of
-      what data to display.
-    </para>
-
-    <para>
-      The grouping in &ETableSpecification; is specified as a
-      hierarchy of columns to group by. Each level of the hierarchy
-      lets you sort by a particular column, either ascending or
-      descending. All levels except the last cause the canvas to group
-      by the given column.
-    </para>
-
-    <para>
-      An example &ETableSpecification; follows.
-    </para>
-
-    <programlisting>
-      &lt;ETableSpecification&gt;
-        &lt;columns-shown frozen_columns="2"&gt;
-	  &lt;column&gt; 0 &lt;/column&gt;
-	  &lt;column&gt; 1 &lt;/column&gt;
-	  &lt;column&gt; 2 &lt;/column&gt;
-	  &lt;column&gt; 3 &lt;/column&gt;
-	  &lt;column&gt; 4 &lt;/column&gt;
-	&lt;/columns-shown&gt;
-	&lt;grouping&gt;
-	  &lt;group column="3" ascending="1"&gt;
-	    &lt;group column="4" ascending="0"&gt;
-	      &lt;leaf column="2" ascending="1"/&gt;
-	    &lt;/group&gt;
-	  &lt;/group&gt;
-	&lt;/grouping&gt;
-      &lt;/ETableSpecification&gt;
-    </programlisting>
-
-    <para>
-      This example has 5 columns which are initially in order. It has
-      2 levels of grouping. The first is grouped by the 4th column
-      (all indexes are 0 based) and sorts those groups in ascending
-      order. Inside those groups, the data is grouped by the fifth
-      column and sorted in descending order of the fifth column.
-      Finally, the data in those groups is sorted by the third column
-      in ascending order. Due to the "frozen_columns" attribute on the
-      columns-shown element, the user will not be
-      able to rearrange the first two columns. They will always be the
-      first two.
-    </para>
-  </sect1>
-
-  <sect1 id="conclusion">
-    <title>Conclusion</title>
-
-    <para>
-      All in all, &ETable; is a very powerful widget. Once you learn
-      to use it, you have access to a vast amount of power requiring a
-      comparatively small amount of work.
-    </para>
-  </sect1>
-</article>