5 # Example file for 'chem':
7 # This originates from Computing Science Technical Report No. 122
8 # CHEM - A Program for Typesetting Chemical Diagrams: User Manual
9 # by Jon L. Bentley, Lynn W. Jelinski, Brian W. Kernighan
10 # <http://cm.bell-labs.com/cm/cs/cstr/122.ps.gz>.
12 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
14 # This file is part of 'chem', which is part of 'groff'.
16 # 'groff' is free software; you can redistribute it and/or modify it
17 # under the terms of the GNU General Public License (GPL) version 2 as
18 # published by the Free Software Foundation.
20 # 'groff' is distributed in the hope that it will be useful, but
21 # WITHOUT ANY WARRANTY; without even the implied warranty of
22 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 # General Public License for more details.
25 # You should have received a copy of the GNU General Public License
26 # along with this program. If not, see <http://www.gnu.org/licenses/>.
28 # The GPL2 license text is available in the internet at
29 # <http://www.gnu.org/licenses/gpl-2.0.html>.
31 ########################################################################
33 B: benzene pointing right
34 F: flatring pointing left put N at 5 double 3,4 with .V1 at B.V2
36 R: ring pointing right with .V4 at B.V6
37 front bond right from R.V6 ; H
38 W: ring pointing right with .V2 at R.V6 put N at 1 double 3,4
39 bond right from W.N ; CH3
40 back bond -60 from W.V5 ; H
42 double bond up from C ; O
45 bond 135 from N ; C2H5
47 ########################################################################