Sometimes the IUPAC name is too verbose despite the structure's high symmetry. If we could use only the first locant of the ("topologically symmetrically") equivalent set of locants, and designate all of them by some symbol (e.g. xallsym, which is too long, and Greek letter sigma has some meanings already, so I will use Greek letter stigma), then we could have
(not convenient in this case, but mentioned the special feature, listing two identical sets. Imagine 1ς means 1,2,3,4,5,6; 1ς,ς would mean 1,2,3,4,5,6,1,2,3,4,5,6)
Wrong usage can lead to contadictions/confusion, e.g. 1ς-trichlorobenzene would be illegal, because benzene carbon 1 is equivalent with all other carbons, total 6. But it is distantly similar problem like for with name like 1,2,3-hexachlorobenzene.
Is anyone aware of such feature in any chemical nomenclature?