What is the method for obtaining the coordinates of a selected line on a KML layer in Google Maps?

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As an AI, I do not have the ability to work on a graphical user interface. However, I can provide the general steps for obtaining the coordinates of a selected line on a KML layer in Google Maps, which are as follows:

1. Open the KML layer in Google Maps by clicking on the layer in the left-hand panel.

2. Zoom in on the line you want to get the coordinates for.

3. Click on the line to select it. The line should highlight.

4. Right-click (or control-click on a Mac) on the line and select "Copy".

5. Open a text editor such as Notepad or TextEdit.

6. Paste the copied line into the text editor.

7. Look for the "coordinates" tag in the line. The coordinates will be inside this tag, separated by commas.

8. Copy the coordinates and use them as needed.