diff -r cfc3d11884ad -r 27a0fdd7bca7 src/main/java/de/uapcore/lightpit/Constants.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/de/uapcore/lightpit/Constants.java	Sat May 09 14:26:31 2020 +0200
@@ -0,0 +1,106 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ * 
+ * Copyright 2018 Mike Becker. All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+package de.uapcore.lightpit;
+
+import static de.uapcore.lightpit.Functions.fqn;
+
+/**
+ * Contains all non-local scope constants used by the this application.
+ * 
+ * Constants with (class) local scope are defined in their respective classes.
+ */
+public final class Constants {
+    public static final String JSP_PATH_PREFIX = "/WEB-INF/jsp/";
+    
+    public static final String JSPF_PATH_PREFIX = "/WEB-INF/jspf/";
+    
+    public static final String DYN_FRAGMENT_PATH_PREFIX = "/WEB-INF/dynamic_fragments/";
+    
+    
+    /**
+     * Name for the context parameter specifying the available languages.
+     */
+    public static final String CTX_ATTR_LANGUAGES = "available-languages";
+    
+    /**
+     * Name for the context parameter optionally specifying the JNDI context;
+     */
+    public static final String CTX_ATTR_JNDI_CONTEXT = "jndi-context";
+    
+    /**
+     * Name for the context parameter optionally specifying a database schema.
+     */
+    public static final String CTX_ATTR_DB_SCHEMA = "db-schema";
+    
+    /**
+     * Name for the context parameter optionally specifying a database dialect.
+     */
+    public static final String CTX_ATTR_DB_DIALECT = "db-dialect";
+    
+    /**
+     * Key for the request attribute containing the class name of the currently dispatching module.
+     */
+    public static final String REQ_ATTR_MODULE_CLASSNAME = fqn(AbstractLightPITServlet.class, "moduleClassname");
+    
+    /**
+     * Key for the request attribute containing the {@link LightPITModule} information of the currently dispatching module.
+     */
+    public static final String REQ_ATTR_MODULE_INFO = fqn(AbstractLightPITServlet.class, "moduleInfo");
+    
+    /**
+     * Key for the request attribute containing the menu list.
+     */
+    public static final String REQ_ATTR_MENU = fqn(AbstractLightPITServlet.class, "mainMenu");
+    
+    /**
+     * Key for the request attribute containing the full path information (servlet path + path info).
+     */
+    public static final String REQ_ATTR_PATH = fqn(AbstractLightPITServlet.class, "path");
+
+    /**
+     * Key for the name of the fragment which should be rendered.
+     */    
+    public static final String REQ_ATTR_FRAGMENT = fqn(AbstractLightPITServlet.class, "fragment");
+    
+    /**
+     * Key for the name of the additional stylesheet used by a module.
+     */    
+    public static final String REQ_ATTR_STYLESHEET = fqn(AbstractLightPITServlet.class, "extraCss");
+    
+    
+    /**
+     * Key for the current language selection within the session.
+     */
+    public static final String SESSION_ATTR_LANGUAGE = fqn(AbstractLightPITServlet.class, "language");
+    
+    /**
+     * This class is not instantiatable.
+     */
+    private Constants() {}
+}