code: def fillsystemdict(self):
      systemdict = self.dictstack[0]
      systemdict["["] = systemdict["mark"] = self.mark = ps_mark()
      systemdict["]"] = ps_operator("]", self.do_makearray)
      systemdict["true"] = ps_boolean(1)
      systemdict["false"] = ps_boolean(0)
      systemdict["StandardEncoding"] = ps_array(ps_StandardEncoding)
      systemdict["FontDirectory"] = ps_dict({})
      self.suckoperators(systemdict, self.__class__)
  
imports: from fontTools.misc.textTools import bytechr, byteord, bytesjoin, tobytes, tostr
  from fontTools.misc import eexec
  from .psOperators import PSOperators, ps_StandardEncoding, ps_array, ps_boolean, ps_dict, ps_integer, ps_literal, ps_mark, ps_name, ps_operator, ps_procedure, ps_procmark, ps_real, ps_string
  import re
  from collections.abc import Callable
  from string import whitespace
  import logging
label_desc: Use image node_id 2 for calling the PSInterpreter obj's underlying member method code with example usage: obj.fillsystemdict() without return types