And I believe .psd is still the only "raw" common format for artistic drawing, right? I've once seen a .psd that won't display correctly in neither Ps or CSP,

And I believe .psd is still the only "raw" common format for artistic drawing, right? I've once seen a .psd that won't display correctly in neither Ps or CSP, supposedly because it was exported from something else. That didn't seem like a fun situation.