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, 2009 Free Software Foundation, Inc.
14 # Last update: 5 Jan 2009
16 # This file is part of `chem', which is part of `groff'.
18 # `groff' is free software; you can redistribute it and/or modify it
19 # under the terms of the GNU General Public License as published by
20 # the Free Software Foundation, either version 3 of the License, or
21 # (at your option) any later version.
23 # `groff' is distributed in the hope that it will be useful, but
24 # WITHOUT ANY WARRANTY; without even the implied warranty of
25 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 # General Public License for more details.
28 # You should have received a copy of the GNU General Public License
29 # along with this program. If not, see <http://www.gnu.org/licenses/>.
31 ########################################################################
34 "R1" at R1 # this puts a label at R1
35 front bond -120 from R1.V5 ; HO
36 # the following line says "fuse the next six-
37 # membered ring with its 6th vertex joining
38 # the second vertex of R1"
39 R2: ring6 with .V6 at R1.V2
40 front bond up from R2.V6 ; CH3
41 back bond down from R2.V4 ; H
42 back bond down from R2.V1 ; H
43 front bond up from R2.V2 ; H
44 R3: ring6 with .V4 at R2.V2
45 R4: flatring with .V5 at R3.V2
46 front bond up from R4.V5 ; CH3
47 back bond down from R4.V4 ; H # this is the alkyl chain
48 bond up from R4.V1 ; BP
57 ########################################################################