C:\a\lib\revit\2011\SDK\Samples\AddSpaceAndZone\CS\bin\Debug\AddSpaceAndZone.dll 485fc7a8-3ed8-445c-bd37-2382b09ddb33 Revit.SDK.Samples.AddSpaceAndZone.CS.Command Create zone and space Create space/zone elements and edit zone in Revit MEP. AlwaysVisible