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-rw-r--r--lispref/tips.texi5
1 files changed, 3 insertions, 2 deletions
diff --git a/lispref/tips.texi b/lispref/tips.texi
index c66b71033c2..dc1a31545a5 100644
--- a/lispref/tips.texi
+++ b/lispref/tips.texi
@@ -103,8 +103,9 @@ modes. These sequences are reserved for users; they are the
@strong{only} sequences reserved for users, so we cannot do without
them.
-Instead, define sequences consisting of @kbd{C-c} followed by a
-non-letter. These sequences are reserved for major modes.
+Instead, define sequences consisting of @kbd{C-c} followed by a control
+character, a digit, or certain punctuation characters. These sequences
+are reserved for major modes.
Changing all the major modes in Emacs 18 so they would follow this
convention was a lot of work. Abandoning this convention would make