diff -r bb6990c0dd1a -r c404a87db5b7 src/org/sonews/storage/Headers.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/sonews/storage/Headers.java	Sun Aug 29 17:43:58 2010 +0200
@@ -0,0 +1,56 @@
+/*
+ *   SONEWS News Server
+ *   see AUTHORS for the list of contributors
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sonews.storage;
+
+/**
+ * Contains header constants. These header keys are no way complete but all
+ * headers that are relevant for sonews.
+ * @author Christian Lins
+ * @since sonews/0.5.0
+ */
+public final class Headers
+{
+
+  public static final String BYTES             = "bytes";
+  public static final String CONTENT_TYPE      = "content-type";
+  public static final String CONTROL           = "control";
+  public static final String DATE              = "date";
+  public static final String FROM              = "from";
+  public static final String LINES             = "lines";
+  public static final String LIST_POST         = "list-post";
+  public static final String MESSAGE_ID        = "message-id";
+  public static final String NEWSGROUPS        = "newsgroups";
+  public static final String NNTP_POSTING_DATE = "nntp-posting-date";
+  public static final String NNTP_POSTING_HOST = "nntp-posting-host";
+  public static final String PATH              = "path";
+  public static final String REFERENCES        = "references";
+  public static final String REPLY_TO          = "reply-to";
+  public static final String SENDER            = "sender";
+  public static final String SUBJECT           = "subject";
+  public static final String SUPERSEDES        = "subersedes";
+  public static final String TO                = "to";
+  public static final String X_COMPLAINTS_TO   = "x-complaints-to";
+  public static final String X_LIST_POST       = "x-list-post";
+  public static final String X_TRACE           = "x-trace";
+  public static final String XREF              = "xref";
+
+  private Headers()
+  {}
+
+}