i think something -- i have seen signs in elevators for instan in embarcadaro center and that is truly in the interior. i guess that's a question that we're going to have to do some more work on and interpreting with the zoning administrator. >> let's look as we come to the end about historic signs. this is a historic sign and this black smith shop and on howard -- folsom and has the beautiful sign on the side of the building. get a little close up of that. tool, manufacturing, in general black smithing. do we make exceptions for historic signs and what way? >> historic signs are allowed and addressed in the planning code. we do want to preserve that and valuable remembrance of the heritage and we want to preserve this. >> i think what is lovely about these signs and what they disappear and appear and this is around for a while and when there is a demolition of a building and you frequently find an old sign for a laundry or whatever and also what is interesting and the degree to which the signs and uses disappear and they're named in the buildings in their place and foundry square and