code: def do_filter(self, arg):
          
          if arg == "list":
              msg.info("TEST CASE FILTERS")
              for f in self.curargs["tfilter"]:
                  if f == "*":
                      msg.info("  * (default, matches all)")
                  else:
                      msg.info("  " + f)
          elif arg not in self.curargs["tfilter"]:
              self.curargs["tfilter"].append(arg)
              self.do_filter("list")
docs: Sets the filter for the test cases to include in the plot/table by name. Only those
          test cases that include this text are included in plots, tables etc.