(Examining): Mention accessing the old variable value via M-n in set-variable.

1 files changed, 2 insertions, 1 deletions

diff --git a/man/custom.texi b/man/custom.texi
index 87722f63b69..0f842145639 100644
--- a/man/custom.texi
+++ b/man/custom.texi
@@ -790,7 +790,8 @@ options; it allows any variable name.
   The most convenient way to set a specific user option variable is
 with @kbd{M-x set-variable}.  This reads the variable name with the
 minibuffer (with completion), and then reads a Lisp expression for the
-new value using the minibuffer a second time.  For example,
+new value using the minibuffer a second time (you can insert the old
+value into the minibuffer for editing via @kbd{M-n}).  For example,
 
 @example
 M-x set-variable @key{RET} fill-column @key{RET} 75 @key{RET}