Many thanks ..... for the coordinate references in LAT & LONG .... your post caused me to look for them on the bottom of the SH4 mission editor window .... and the reason I couldn't see them was my poxy window, when maximized, always seems to overlap the bottom with my quick launch bar ... so I was never seeing the coordinates, unitl I downsized the window .... hence my confusion.
Still ... if you hadn't replied, I'd never have gone back and taken a closer look ... so many thanks