Most programs that I have looked at and the one that I am using, use the command FETCH when beginning force fetch and later transition to the command BACK. What for? I use my dog's name for marks and will use BACK for blinds and don't forsee using FETCH. Why would you introduce a command that will get phased out later and not be used? Why not just use BACK in the first place? I'm sure there is a good explanation. Can someone enlighten me?