Bug 173582 Run servlet should not be affected by values in document.[0000]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
/**
	 * URL parameter name that specifies whether show the report title.
	 */
	public static final String PARAM_SHOW_TITLE = "__showtitle"; 
	/**
	 * URL parameter name that specifies whether show the toolbar.
	 */
	public static final String PARAM_TOOLBAR = "__toolbar"; 
	/**
	 * URL parameter name that specifies whether show the navigationbar.
	 */
	public static final String PARAM_NAVIGATIONBAR = "__navigationbar"; 
	/**
	 * URL parameter name that specifies whether force prompting the parameter
	 * dialog.
	 */
	public static final String PARAM_PARAMETER_PAGE = "__parameterpage"; 
	/**
	 * URL parameter name that gives the report design name.
	 */
	public static final String PARAM_REPORT = "__report"; 
	/**
	 * URL parameter name that gives the report document name.
	 */
	public static final String PARAM_REPORT_DOCUMENT = "__document"; 
	/**
	 * URL parameter name that gives the format to display the report, html or
	 * pdf.
	 */
	public static final String PARAM_FORMAT = "__format";