##################################################################
# car2arc.awk:
#
# Function:  Converts a collection of .car/.cor files into a single .arc file
#            Each file must correspond to the exact same molecule.
#
# Syntax:      nawk -f car2arc.awk test*.car > test.arc
##################################################################

BEGIN {n=0}
{
   if (n<2){ #pass through the first 2 lines of the first file
      n++
      print $0
      next
   }
   if (match($1,"!BIOSYM")){ #on all other files, skip the first 2 lines
      getline
      next
   }
   print $0
}