diff --git a/features-tree.scm b/features-tree.scm
index 24d7069..f3b6a03 100644
--- a/features-tree.scm
+++ b/features-tree.scm
@@ -1,20 +1,21 @@
-#|
-Features Tree, creates graphviz-compatible files from Scheme trees.
-Copyright (C) 2019 Lucien "Phundrak" Cartier-Tilet
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Features Tree, creates graphviz-compatible files from Scheme trees.
+;; Copyright (C) 2019 Lucien "Phundrak" Cartier-Tilet
+;;
+;; This program 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.
+;;
+;; This program 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
+;; this program. If not, see <http://www.gnu.org/licenses/>.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
-This program 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.
-
-This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
-|#
 
 (define (declare-node node-text node-generation)
   (string-append (number->string node-generation)