Thanks Paul, I've played with GE2KAP quite a bit and was aware of the polygon function. I don't think it will do what I was hoping (please correct me if I'm wrong).
What I was hoping to accomplish was to instead of putting the time and effort into creating individual
charts. Instead create a database of bounding boxes and chart scales that could be run to automatically create the charts from online imagery sources.
This database would be similar to the chart catalog for admiralty charts where the majority of areas are covered at say a 1:20 000 scale with harbours,
anchorages and passes etc at 1:5 000.
Just seemed like a logical way to create imagery charts, but doesn't seem like anybody is doing it this way.
Colin.