ch5a_size.chem:
.br
.cstart

# This originates from Computing Science Technical Report No. 122
#   CHEM - A Program for Typesetting Chemical Diagrams: User Manual
#   by Jon L. Bentley, Lynn W. Jelinski, Brian W. Kernighan
#   <http://cm.bell-labs.com/cm/cs/cstr/122.ps.gz>.

.ps 14
size 16
R: ring6 put O at 1 put C at 2 put O at 3 put C at 4 put O at 5 put C at 6
   double bond 60 from R.V2 ; NH
   double bond down from R.V4 ; NH
   double bond -60 from R.V6 ; HN
size 10 # if you are doing more than one
.ps 10

# Local Variables:
# mode: Nroff
# End:
.cend