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-rw-r--r--doc/lispref/functions.texi2
1 files changed, 2 insertions, 0 deletions
diff --git a/doc/lispref/functions.texi b/doc/lispref/functions.texi
index 854dd33030c..78372a8a10e 100644
--- a/doc/lispref/functions.texi
+++ b/doc/lispref/functions.texi
@@ -611,6 +611,8 @@ Here are some examples:
@end group
@end example
+@cindex override existing functions
+@cindex redefine existing functions
Be careful not to redefine existing functions unintentionally.
@code{defun} redefines even primitive functions such as @code{car}
without any hesitation or notification. Emacs does not prevent you