Section 8 Monitoring a Dragging Anchor  8-6 
8.3.7  Changing a shape of a dragging anchor 
monitoring polygon on the chart 
Changing a vertex 
1  Click on the vertex of the dragging anchor monitoring polygon to be changed. 
The cursor is set to the Edit cursor. 
2  Move the cursor to the required vertex position of the dragging anchor monitoring 
polygon and click the mouse button. 
The position of the vertex is changed. 
 
Adding a vertex 
1  Click the mouse button on the position where a vertex to be added. 
The cursor is set to the Edit cursor. 
2  Move the cursor to the position where a vertex is to be set and click the mouse button. 
A new vertex is added. 
 
8.3.8  Changing a shape of a dragging anchor 
monitoring polygon on the context menu 
The following operation can be performed on the context menu that is displayed by clicking the right 
mouse button on the dragging anchor monitoring polygon. 
 
Each function is as follows. 
[Insert vertex]   
Adds a vertex at the position where the mouse button is clicked on. 
[Delete vetex]   
Deletes the selected vertex. 
[Move this object] 
Moves the selected dragging anchor monitoring polygon to any position. 
[Delete this object]   
Deletes a selected dragging anchor monitoring polygon. 
 
Memo 
If an attempt is made to delete a dragging anchor monitoring polygon during execution of dragging 
anchor monitoring, a confirmation dialogue appears. 
To execute deletion, click on the [Yes] button. The monitoring area is deleted and dragging anchor 
monitoring is terminated. 
 
[Clicking the right mouse button on the line 
other than vertices of the dragging anchor 
[Clicking the right mouse button on a vertex of 
a dragging anchor monitoring polygon]