使用“命名表达式”对话框中的“导入”和“导出”控制选项在项目之间共享命名表达式。

交换格式为如下所示的 XML 结构：

<NamedExpressions>
	<Expressions>
		<NamedExpression>
			<Name>name</Name>
			<Label>label</Label>
			<Description>description</Description>
			<Expression>expression</Expression>
			<RequiredSymbolSets>
				<SymbolSet>symbol_set_1</SymbolSet>
					...
				<SymbolSet>symbol_set_n</SymbolSet>
			</RequiredSymbolSets>
			<Keywords>
				<Keyword>keyword_1</Keyword>
					...
				<Keyword>keyword_n</Keyword>
				<Keyword>UserInterface</Keyword>
			</Keywords>
		</NamedExpression>
		.
		Each additional named expression is defined in
its own <NamedExpression> element.
		.
	</Expressions>
	<Keywords>
		<Keyword>
			<Name>keyword</Name>
			<Label>keyword_label</Label>
			<Description>keyword_description</Description>
			<IconName>keyword_icon</IconName>
		</Keyword>
		.
		Each additional application keyword is defined
in its own <Keyword> element.
		.
	</Keywords>
</NamedExpressions>

<Keywords> 元素指定 DGN 库中的应用程序关键字。