Bug 136770 Cannot view report document from web viewer
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
public static final String PARAM_ISNULL = "__isnull"; 
	public static final String PARAM_MASTERPAGE = "__masterpage"; 
	public static final String PARAM_DESIGNER = "__designer"; 
	public static final String PARAM_OVERWRITE = "__overwrite"; 
	public static final String PARAM_IMAGEID = "__imageID"; 
	public static final String PARAM_BOOKMARK = "__bookmark"; 
	/**
	 * Custom request headers.
	 */
	public static final String HEADER_REQUEST_TYPE = "request-type"; 
	public static final String HEADER_REQUEST_TYPE_SOAP = "soap"; 
	/**
	 * Parametrer passed over by export data form.
	 */
	public static final String PARAM_IID = "iid"; 
	public static final String PARAM_RESULTSETNAME = "ResultSetName"; 
	public static final String PARAM_SELECTEDCOLUMNNUMBER = "SelectedColumnNumber"; 
	public static final String PARAM_SELECTEDCOLUMN = "SelectedColumn"; 
	/**
	 * Servlet configuration parameter names.
	 */
	public static final String INIT_PARAM_LOCALE = "BIRT_VIEWER_LOCALE"; 
	public static final String INIT_PARAM_REPORT_DIR = "BIRT_VIEWER_WORKING_FOLDER"; 
	public static final String INIT_PARAM_IMAGE_DIR = "BIRT_VIEWER_IMAGE_DIR"; 
	public static final String INIT_PARAM_LOG_DIR = "BIRT_VIEWER_LOG_DIR"; 
	public static final String INIT_PARAM_LOG_LEVEL = "BIRT_VIEWER_LOG_LEVEL"; 
	public static final String INIT_PARAM_SCRIPTLIB_DIR = "BIRT_VIEWER_SCRIPTLIB_DIR"; 
	public static final String INIT_PARAM_WORKING_FOLDER_ACCESS_ONLY = "WORKING_FOLDER_ACCESS_ONLY"; 
	/**
	 * Suffix of report document.