          interact.start()
       
       when 'st', 'start'
+         # TODO: D.R.Y. up file-reading
          readFilesAsync(argv).then (files)->
             sources.push files...
             _.forEach sources, (source)->

   if (argf.version)
      return version()
   
   sources = _([argf.e, argf.expr, argf.expression])
      .flatten().compact().map (expression)-> { from: expression, code: expression }
      .value()

               here = new Paws.reactor.Unit
               here.stage root
               
               # TODO: Use queue-flushing for optional exiting, instead of --no-start
               here.start() unless argf.start == false
      
      else argv.unshift('start', operation) and choose()
