Bug 156912 Proxy problems with birt-viewer.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
*/
	public static final String SERVLET_PATH_PARAMETER = "/parameter"; 
	/**
	 * Servlet path for preview model.
	 */
	public static final String SERVLET_PATH_PREVIEW = "/preview"; 
	/**
	 * Servlet path for frameset model.
	 */
	public static final String SERVLET_PATH_FRAMESET = "/frameset"; 
	/**
	 * Servlet path for running model.
	 */
	public static final String SERVLET_PATH_RUN = "/run"; 
	/**
	 * Servlet path for running model.
	 */
	public static final String SERVLET_PATH_DOWNLOAD = "/download"; 
	
	/**
	 * URL parameter name that specifies the viewer id.
	 */
	public static final String PARAM_ID = "__id"; 
	/**
	 * URL parameter name that specifies the report title.
	 */
	public static final String PARAM_TITLE = "__title"; 
	/**
	 * URL parameter name that specifies whether show the report title.
	 */