Of course, it's also stated in L2, section 9.1.E.2.m.1, making the reader wonder why it's duplicated in both rulesets and not in a common section...oh wait, there is no common section for regs that apply to both...
GA
*One can legit argue why someone felt the need to add that express prohibition given 9.1.5.D.1 and GCR 1.2.3. Yes, I'm going to make you look it up, you need to read it. And know it.