Bug 184762 BIRT Model - Enhancments to the level defintion
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/parser/DesignSchemaConstants.java
static final String ENCRYPTED_PROPERTY_TAG = "encrypted-property"; 
	static final String EX_PROPERTY_TAG = "ex-property"; 
	static final String EXPRESSION_TAG = "expression"; 
	static final String EXTENDED_ITEM_TAG = "extended-item";  
	static final String EXTENDS_ATTRIB = "extends"; 
	static final String EXTENSION_ATTRIB = "extension"; 
	static final String EXTENSION_NAME_ATTRIB = "extensionName"; 
	static final String EXTENSION_ID_ATTRIB = "extensionID"; 
	static final String FILTER_PARAMETER_TAG = "filter-parameter";  
	static final String FONT_FAMILY_ATTRIB = "font-family";  
	static final String FONT_SIZE_ATTRIB = "font-size";  
	static final String FONT_STYLE_ATTRIB = "font-style";  
	static final String FONT_VARIANT_ATTRIB = "font-variant";  
	static final String FONT_WEIGHT_ATTRIB = "font-weight";  
	static final String FOOTER_TAG = "footer";  
	static final String FREE_FORM_TAG = "free-form";  
	static final String GRAPHIC_MASTER_PAGE_TAG = "graphic-master-page";  
	static final String GRID_TAG = "grid";  
	static final String GROUP_TAG = "group";  
	static final String HEADER_TAG = "header";  
	static final String HEADLINE_TAG = "headline"; 
	static final String HIERARCHY_TAG = "hierarchy"; 
	static final String HTML_PROPERTY_TAG = "html-property"; 
	static final String ID_ATTRIB = "id"; 
	static final String IMAGE_TAG = "image";  
	static final String IMPORT_TAG = "import"; 
	static final String INCLUDE_LIBRARY_TAG = "include-library";  
	static final String INCLUDE_SCRIPT_TAG = "include-script"; 
	static final String INCLUDE_TAG = "include"; 
	static final String INCLUDES_TAG = "includes";