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-rw-r--r--etc/charsets/README4
1 files changed, 3 insertions, 1 deletions
diff --git a/etc/charsets/README b/etc/charsets/README
index 0045a0f638e..96cba7c6139 100644
--- a/etc/charsets/README
+++ b/etc/charsets/README
@@ -27,7 +27,9 @@ character code separated by a space. Both code points and Unicode
character codes are in hexadecimal preceded by "0x". Comments may be
used, starting with "#". Code ranges may also be used, with
(inclusive) start and end code points separated by "-" followed by the
-Unicode of the start of the range
+Unicode of the start of the range.
+Code points for which there's no mapping to Unicode should be skipped,
+i.e. their lines should be omitted.
Examples:
0xA0 0x00A0 # no-break space