I'm not sure if << Use Locale(0) would work
Names Default To Here(1);
opt1 = Format(Today(), "Format Pattern", "<Month>", << Use Locale(0));
If not you could create conversion list and use that
Names Default To Here(1);
months = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
months[Month(Today())];
-Jarmo