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====== ShowTerrainRangeIndicator ======
ShowTerrainRangeIndicator(<-cellX <-cellZ <-radius <-isSquare)

===== Description =====
Creates a grid that show a range.
The cellX and cellZ coordinates are the integer map coordinates to center the indicator
The radius is the range, or how big to make the indicator
The isSquare argument makes the indicate a square if true and a circle otherwise.
Note: The indicator object is created when this API is called and must be later destroyed when no longer needed by the [[4rpl:commands:destroyterrainrangeindicator|DestroyTerrainRangeIndicator]] API.

===== Examples =====
<code 4rpl>
ShowTerrainRangeIndicator(GetPointerTerrainCoords 10 false)
</code>
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