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%manual
%end
%include <head.h>
if [[ %PARALLEL:1% == 1 ]]; then
  for param in %PARAM:2t u v rh%; do
    # process: create ${param}.grib
  done
fi

if [[ %SERIAL:1% == 1 ]]; then
  for param in %PARAM:2t u v rh%; do
    # push into fields data base
  done
fi
%include <tail.h>

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A real case example is given by the family ensms (ensemble mean statistics) where few parameters and multiple level shall generate tasks and grib files in parallel, while a single task by the end moves the grib files into the fields data base ("limit em 1" is used as a mutex) 

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