...
'%,s'.[12345678]⟹'12,345,678'(the "," modifier shows a number with thousands separators, correctly localised)'%.33s'.[123.4]⟹'123.400'(show 3 fractional digits, rounding half away from zero - decimal point correctly localised)'%,.11s'.[12345.67]'⟹'12,345.7'(combination of the above)
...