code: def enforce(self,enforce_bounds="reset"):
          
          if isinstance(enforce_bounds,bool):
              import warnings
              warnings.warn("deprecation warning: enforce_bounds should be "+\
                            "either 'reset', 'drop', 'scale', or None, not bool"+\
                            "...resetting to None.",PyemuWarning)
              enforce_bounds = None
          if enforce_bounds is None:
              return
  
          if enforce_bounds.lower() == "reset":
              self.enforce_reset()
          elif enforce_bounds.lower() == "drop":
              self.enforce_drop()
          elif enforce_bounds.lower() == "scale":
              self.enfore_scale()
          else:
              raise Exception("unrecognized enforce_bounds arg:"+\
                              "{0}, should be 'reset' or 'drop'".\
                              format(enforce_bounds))
docs: entry point for bounds enforcement.  This gets called for the
          draw method(s), so users shouldn't need to call this
  
          Parameters
          ----------
          enforce_bounds : str
              can be 'reset' to reset offending values or 'drop' to drop
              offending realizations