Thanks Erel.
I'm really looking forward to getting to grips with B4X - VB6 is getting a bit stale (but still useful).
VB (various flavours) has filled the gap from Fortran, Cobol, Algol-68R, paper-tape, punch cards, PDP-11 assembly code, monsters like CDC Cyber73(?) and ICL 1900s.
B4X has the cross platform support admired today and the language is somewhat familiar, but the underlying error and warning messages seem overly length and complex. Probably why I never go to grips with C.
I backed away from IT for quite a few years, but having a re-think.