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-rw-r--r--contrib/chem/examples/atp.chem8
1 files changed, 4 insertions, 4 deletions
diff --git a/contrib/chem/examples/atp.chem b/contrib/chem/examples/atp.chem
index e2a4f7a9f..61a03dcc3 100644
--- a/contrib/chem/examples/atp.chem
+++ b/contrib/chem/examples/atp.chem
@@ -1,7 +1,7 @@
atp.chem:
.cstart
-# Example file for `chem':
+# Example file for 'chem':
# ATP or C10_H16_N5_O13_P3 or
# [[[5-(6-aminopurin-9-yl)-3,4-dihydroxy-oxolan-2-yl]methoxy-hydroxy-
# phosphoryl]oxy-hydroxy-phosphoryl]oxyphosphonic acid
@@ -14,13 +14,13 @@ atp.chem:
# Copyright (C) 2006-2014 Free Software Foundation, Inc.
# Written by Bernd Warken <groff-bernd.warken-72@web.de>.
-# This file is part of `chem', which is part of `groff'.
+# This file is part of 'chem', which is part of 'groff'.
-# `groff' is free software; you can redistribute it and/or modify it
+# 'groff' is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License (GPL) version 2 as
# published by the Free Software Foundation.
-# `groff' is distributed in the hope that it will be useful, but
+# 'groff' 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.