Yes. In fact, if you trace the "school" of performance zoning I belong to back to its roots, we started off having no standards in the code, just procedures. All of the standards were in the plan. That didn't play well with the lawyers (even though my co-conspirator in all of that was a lawyer), so we abandoned it, as not being part of the essence of the concept. In consistency doctrine states, there still has to be a clear relationship between the plan and the code, of course, so the plan that is behind the performance standards has to be more detailed than a plan that just revolves around a future land use map.