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-rw-r--r--txr.12
1 files changed, 1 insertions, 1 deletions
diff --git a/txr.1 b/txr.1
index 12433d19..53219a95 100644
--- a/txr.1
+++ b/txr.1
@@ -2860,7 +2860,7 @@ definitions are in error:
@(defex x y)
@(defex y x)@# error: circularity; y is already a supertype of x.
-.SS NOTES ON EXOTIC REGULAR EXPRESSIONS
+.SH NOTES ON EXOTIC REGULAR EXPRESSIONS
Users familiar with regular expressions may not be familiar with the complement
and intersection operators, which are often absent from text processing tools