diff --git a/doc/src/sgml/ref/copy.sgml b/doc/src/sgml/ref/copy.sgml
index 188f892fa0f..34f1b496ebf 100644
--- a/doc/src/sgml/ref/copy.sgml
+++ b/doc/src/sgml/ref/copy.sgml
@@ -1,5 +1,5 @@
@@ -511,6 +511,19 @@ COPY tablename [ (
+
+
+ In CSV> mode, all characters are significant. A quoted value
+ surrounded by white space, or any characters other than
+ DELIMITER>, will include those characters. This can cause
+ errors if you import data from a system that pads CSV>
+ lines with white space out to some fixed width. If such a situation
+ arises you might need to preprocess the CSV> file to remove
+ the trailing white space, before importing the data into
+ PostgreSQL>.
+
+
+
CSV mode will both recognize and produce CSV files with quoted