该面板可以附加gate条件，而在该场景中未使用，因为该条件包含目标服务而无消息内容。
This panel also lets you add in gate conditions, which are not being used in this scenario since the conditionality involves target service and not message content.
以下的示例描述了一种简单的场景：单击 to-dos 列表中的某一项将使用相应的数据更新（以 Ajax 模式）预览面板。
The example below represents a simple scenario: A click on the item from the list of to-dos should update (in Ajax mode) the preview pane with the corresponding data.
完成这步设置，在窗口右边找到属性面板，设置你的场景单位为米。
So to make this, go to Properties Panel on your right side and set up your scene units to metric.
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