1 files changed, 19 insertions, 0 deletions
diff --git a/Expr.hs b/Expr.hs
index 5514e4a..2210735 100644
--- a/Expr.hs
+++ b/Expr.hs
@@ -1,3 +1,22 @@
+{-
+ - Copyright 2018 Raymond Hogenson
+ -
+ - This file is part of RealCalc.
+
+ - RealCalc is free software: you can redistribute it and/or modify
+ - it under the terms of the GNU General Public License as published by
+ - the Free Software Foundation, either version 3 of the License, or
+ - (at your option) any later version.
+ - 
+ - RealCalc is distributed in the hope that it will be useful,
+ - but WITHOUT ANY WARRANTY; without even the implied warranty of
+ - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ - GNU General Public License for more details.
+ - 
+ - You should have received a copy of the GNU General Public License
+ - along with RealCalc.  If not, see <http://www.gnu.org/licenses/>.
+ -}
+
 module Expr (parseE, Expr(..)) where
 
 import Text.Parsec