This is the state of play at the moment.

I can not stess how appreciative I am of the Incremental Save. It is so much more creditable to use that occasionaly than to go back through an Undo exercise.
Thouigh, saying that, it is less necessary probably with MoI because it never sems to jag,freeze, dissapear. (Can MoI be "b--------d up" to use the thought we all use?)