define-generic-mode doc string fix

* lisp/emacs-lisp/generic.el (define-generic-mode): Say what a
generic mode is (bug#43713).

1 files changed, 4 insertions, 0 deletions

diff --git a/lisp/emacs-lisp/generic.el b/lisp/emacs-lisp/generic.el
index 06ef5800568..a9328a69036 100644
--- a/lisp/emacs-lisp/generic.el
+++ b/lisp/emacs-lisp/generic.el
@@ -116,6 +116,10 @@ instead (which see).")
                                     function-list &optional docstring)
   "Create a new generic mode MODE.
 
+A \"generic\" mode is a simple major mode with basic support for
+comment syntax and Font Lock mode, but otherwise do not have a
+any special keystrokes or functionality available.
+
 MODE is the name of the command for the generic mode; don't quote it.
 The optional DOCSTRING is the documentation for the mode command.  If
 you do not supply it, `define-generic-mode' uses a default