Well-known text
WKT2で表された座標参照系を読み込むことができるソフトウェアは, 多くの場合(全てとは限らないが), WKT1で表された同様の地理座標系を読み込むことができる Some caveats exist, notably the removal of the TOWGS84 element which is replaced by the BOUNDCRS element. Another caveat is about the units of measurement. Some of them were unspecified in oldest WKT 1 specifications (for example the PRIMEM unit), which has led to different interpretations by different software. Those units of measurement have been clarified in the 2001 update and the WKT 2 specification is consistent with that clarification. But not all software have followed the 2001 clarification.