• Allow input information to be single entities or lists of entities.
  
  Within the limits of common sense, if a function works on one thing, it should work on a list of that type of thing.
  
  Example:
  

  (MW-OF p-NpF0001)
  :: 60335
  
  (MW-OF (ALL-ORTHOLOGS-OF p-NpF0001))
  :: (59857 60278 60366 60335 57866)
  

  In general, functions may be called with singular or plural names, with no change in results
  
  Example:
  

  (GENE-UPSTREAM-OF all4312)
  :: #$A7120.asr4313
  (GENES-UPSTREAM-OF (all4312 Npf0001))
  :: (#$A7120.asr4313 #$Npun.NpR6632)
  (GENE-UPSTREAM-OF (all4312 Npf0001))
  :: (#$A7120.asr4313 #$Npun.NpR6632)
  
  

  
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