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# Adding Control Objects
Control objects can be used as visual elevation references, and with RiPrecision, as control objects.
To add control points, right click on Control Objects and select import, then select the coordinate system that the points reference.
Ensure that the file type selected is Point Exchange Format:
The point exchange format is name, X, Y, Z. Your CSV file must match this:
example CSV with UTM coordinates in name, x, y, z format