I have been thinking about placing a multi cache and would like to ask a question about the stages. Can the stage clue to the next stage or final cache be written on something which you have left at the stage? Could you, for example, write the coords of the next stage on a wall? I don't want to give away too much in case some of my potential searchers are reading this message and it would not be a crude as that but the principle would be the same. Can anyone give any exmples of this?