创建图表，显示收集的数据和内容中存在的重叠和空白区域。
Create a chart that shows both the overlaps and gaps in the gathered data and content.
如果您想要创建一个丢失的消息，那么您可以将一条消息拖拉至图表的空白区域。
To create a lost message, drag the message to an empty area of the diagram.
如果您想要创建一个找到的消息，那么您可以拖拉消息，从图表的空白区域拖拉一条消息。
To create a found message, drag the message, starting from an empty area of the diagram.
创建控件更简单的办法是从实例数据中选择节点，拖放到设计画布的空白区域。
An even easier way to create a control is to select a node in your instance data and drag it onto an empty area in the design canvas.
最后提一点：leader - pattern属性还支持dots和space值，前者通常用于目录，后者创建一个空白区域。
A final note: the leader-pattern attribute also supports the values of dots, typically used in Tables of Contents, and space, which creates an area of blank space.
最后提一点：leader - pattern属性还支持dots和space值，前者通常用于目录，后者创建一个空白区域。
A final note: the leader-pattern attribute also supports the values of dots, typically used in Tables of Contents, and space, which creates an area of blank space.
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