is it possible to select items in the Dynamo as in Revit with clamped the Tab key
i find this similar method , but is not as "Tab method ". its just select most nearlest elements
AllRefs from RevitAPI
http://www.revitapidocs.com/2017.1/bfd0a83e-c6a4-cec6-8428-b5b8b4357ee5.htm