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<h3>Coordinate Reference System Selector</h3>
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<p>
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The Coordinate Reference System Selector allows you to set the projection for
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the current layer.
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</p>
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<p>
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You can find a coordinate system by entering its name, EPSG code or the QGIS ID
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into the <label>Filter</label> text field. The list of recently used
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coordinate systems are available at the top for quick access.
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</p>
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<p>
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When operating across layers, for example, computing intersections between
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two layers, it is important that both layers have the same CRS. To change the
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projection of an existing layer, it is insufficient to simply change the CRS
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in that layer's properties. Instead you must save the layer as a new layer,
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and choose the desired CRS for the new layer.
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</p>
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