mr. tony kelly said earlier. the ami definition, when we talk about middle income housing, particularly for blue-collar workers trying to stay in san francisco -- we do not want to use the area median income when we look at what is blue-collar and what is middle income. we want to look at san francisco. that is just one aside, but it sounds like there are some ideas on how we give the rights to tenants to make sure they have the ability to vote on whether they want to live in one of these districts or not, but we need additional safeguards, and supervisor wiener's proposal is one of the only ones we have seen. thank you. president miguel: thank you. >> good afternoon, commissioners. i am not going to opine on the process for establishing historic districts, but i want to focus on what comprises the sort of elements of character when a historic district is established or when there is the conversation about creating one. one of the aspects about the proposed amendment that strikes me as being particularly difficul