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-rw-r--r--src/iso19111/c_api.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/iso19111/c_api.cpp b/src/iso19111/c_api.cpp
index 7d4f5eba..9f73f8e9 100644
--- a/src/iso19111/c_api.cpp
+++ b/src/iso19111/c_api.cpp
@@ -2192,6 +2192,10 @@ PJ *proj_get_target_crs(PJ_CONTEXT *ctx, const PJ *obj) {
* The candidate CRSs are either hard-coded, or looked in the database when
* it is available.
*
+ * Note that the implementation uses a set of heuristics to have a good
+ * compromise of successful identifications over execution time. It might miss
+ * legitimate matches in some circumstances.
+ *
* The method returns a list of matching reference CRS, and the percentage
* (0-100) of confidence in the match. The list is sorted by decreasing
* confidence.