anchor.diff:  will produce
   
   ----
  -+ aprun -n 2 -N 1 -d 2 -e LD_LIBRARY_PATH=... .../tclsh8.6 .../swift-t-hello.ctG.tic
  -CODE: 0
  ++ aprun -n 2 -N 1 FAIL ME -e LD_LIBRARY_PATH=... .../tclsh8.6 .../swift-t-hello.EmD.tic
  +aprun: file FAIL not found
  +aprun: Exiting due to errors. Application aborted
   ----
   
   or
   
   ----
  -+ aprun -n 2 -N 1 FAIL ME -e LD_LIBRARY_PATH=... .../tclsh8.6 .../swift-t-hello.EmD.tic
  -aprun: file FAIL not found
  -aprun: Exiting due to errors. Application aborted
  ++ aprun -n 2 -N 1 -d 2 -e LD_LIBRARY_PATH=... .../tclsh8.6 .../swift-t-hello.ctG.tic
  +CODE: 0
   ----
  
positive.code: $ 
  ----
  
  # Wait for job completion
  
  ----
  $ grep "aprun\|CODE:" $( cat turbine-directory.txt )/output.txt
  
negative.code: 
  == Transcript
  
  Edit +example.sh+ to select a +TURBINE_LAUNCH_OPTIONS+.  Then:
  
  ----
  $ ./example.sh 
  