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For each type of situation analysis detection tool you must set a virtual element of one of two types:

1. A line
2. An area

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The type of visual element is determined by the detection type. Only the Line crossing detection requires you to set a Line element. Other situation analysis detection tools require you to set an Area element for each detection tool.

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1. In the Detection Tools list, highlight the Detection Tool object for which you need to set an area (1).
   

2. In the viewing tile (2) set the nodes of the area, in order, in which the situation requires analysis.

   Info
   title Note
   When the area is being constructed, the nodes are connected by a two-color dotted line which outlines the area's borders

   Action	Result
   Left-click in the viewing tile	Creates a new area node
   Right-click on a created node	Deletes the area node
   Position the cursor on a node and hold down the left mouse button while you move the mouse	Moves the area node
   Click the button	Deletes the area

3. Click the Apply button.

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