*Existing in the doorway itself.*

   When we enter a doorway, we look back the room behind us, for
   just a moment.

   ''Did I forget anything?''

   ''Is there something I need to do while I am here?''

   ''What can I do here, before I move on, before I walk through
   this door?''

   What doorway are you standing in? What room are you leaving and
   what room are you going to?