Add header comment.

diff --git a/lisp/calc/calc-rules.el b/lisp/calc/calc-rules.el
index 4cb1d745b66d0b65ae98b03a3c7a36757c7c3884..e40534527111c1026baa4ff35f629603003684c0 100644 (file)
--- a/lisp/calc/calc-rules.el
+++ b/lisp/calc/calc-rules.el
@@ -1,4 +1,4 @@
-;;; calc-rules.el --- 
+;;; calc-rules.el --- rules for simplifying algebraic expressions in Calc
 
 ;; Copyright (C) 1990, 1991, 1992, 1993, 2001 Free Software Foundation, Inc.