The use regulations of the underlying M1-4 District shall apply, except as follows:

1. all uses listed under Use Group III(B) shall be permitted;
2. uses listed under Use Group VI with a size limitation, as denoted with an “S” in the Use Group tables set forth in Section 42-16 (Use Group VI – Retail and Services), shall be permitted without size limitation;
3. uses listed under Use Groups IV(B), IX and X shall be limited to those permitted within M1 Districts in Special Mixed Use Districts, as set forth in Section 123-20 (SPECIAL USE REGULATIONS), inclusive; and
4. such permitted uses listed under Use Groups IV(B), IX and X, along with uses in Use Group VI that are listed in paragraph (c) of Section 42-163 (Use Group VI – uses subject to additional conditions) shall be located within a completely enclosed building.