It’s specifically valuable for detailed structures or properties in conservation areas where by window substitution isn’t permitted. Jerry CoffinJerry Coffin 493k8383 gold badges652652 silver badges1.1k1.1k bronze badges seven twelve Be aware that g++ rejects %lf when compiling with -Wall -Werror -pedantic: mistake: ISO C++ will not support the ‘%lf’ gnu_printf https://charliey692mta3.idblogmaker.com/35974881/detailed-notes-on-london-secondary-glazing