PROCESSORS_MAP
BEGIN
Multi_Instance_Start
POP1   0  2  pop1.in pop1.out  alpha=3 beta=4.5 debug=on 
POP2   3  4  pop2.in pop2.out  alpha=2 beta=5.43e-5 debug=off
POP3   5  6  pop3.in pop3.out  dynamics=finite_volume beta=100.10 debug=on 
Multi_Instance_End
coupler
Multi_Comp_Start
ice   0  2  str1 str2 
land  3  5  str3 
Multi_Comp_End
POP_control
END 
ADD any comments in this line and below.
  for multiple components in single executable, 
  include component info between Multi_Comp_Start
  and Multi_Comp_End, and each component's relative
  processor_id in that executable world. Up to
  5 strings could also be attached in the end to
  pass input and output file names and some other
  info. Processor overlap is allowed within each
  multi-component executable but NOT within each
  multi-instance executable.