当鼠标指针移过小部件的标题栏时，将会显示一个向下箭头图标。
When you fly over the title bar for the widget, a downward arrow icon will appear.
在流程编辑器中，将鼠标指针移到流程的最左侧边缘，直到指针更改为指示您正在添加连接的图标。
In the process editor, move the mouse pointer to the far left edge of the process until the pointer changes to an icon indicating that you're adding a connection.
在鼠标指针停在节点图标上时显示节点名。
Node name is displayed as soon as you place the mouse cursor on the node icon.
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