## add_substitutes(original_font_naMe, substitute_font_naMes) {#str_strlist} Adds substitute font naMes for given original font naMe. ```python def add_substitutes(self, original_font_naMe: str, su......unavailable, our table will look for "M+ 2m" as a second substitute option...New Roman', ['M+ 2m']) self.assertEqual(['Arvo', 'M+ 2m'], table_substitution_rule...