So this is about ability to use layouts without "using namespace Upp". In the past, I have tried to solve that issue in layout designer, adding Upp:: before typenames and stuff, only to forget something on each iteration.
and actually reverted layout designer to previous mode (of course, retained the code for ignoring those now obolsete Upp:: texts).
Do you see any problem with this new approach? I have read somewhere that unnamed namespaces in headers are bad, but I think in this particular case it should be fine...