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-rw-r--r--include/proj/internal/io_internal.hpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/proj/internal/io_internal.hpp b/include/proj/internal/io_internal.hpp
index 1e2508cc..617dffab 100644
--- a/include/proj/internal/io_internal.hpp
+++ b/include/proj/internal/io_internal.hpp
@@ -62,6 +62,7 @@ class WKTConstants {
static const std::string PROJECTION;
static const std::string PARAMETER; // WKT2 too
static const std::string VERT_CS;
+ static const std::string VERTCS; // WKT1 ESRI
static const std::string VERT_DATUM;
static const std::string COMPD_CS;
static const std::string TOWGS84; // WKT1 only
@@ -95,7 +96,7 @@ class WKTConstants {
static const std::string CITATION;
static const std::string URI;
static const std::string VERTCRS;
- static const std::string VDATUM;
+ static const std::string VDATUM; // WKT2 and WKT1 ESRI
static const std::string COMPOUNDCRS;
static const std::string PARAMETERFILE;
static const std::string COORDINATEOPERATION;