On 05/02/2014 03:53 AM, Johnny Billquist wrote: But using FORTRAN, we could potentially use overlays and such. Well, overlays do not depend on FORTRAN, you can use that no matter what language you choose. Yes, of course. I don't know what I was thinking. Thank you for the correction. I myself have only actually used overlays with FORTRAN; that was probably the source of my error. -Dave -- Dave McGuire, AK4HZ New Kensington, PA