I agree with Mila.^^' The ending "-(으)십시오(not 십시요)" is the honorific form of "-(으)세요", and often used in written. e.g. Please learn Korean. (to learn = 배우다) = 한국어를 배우+세요.(polite, informal) = 한국어를 배우+십시오.(polite, formal) Please sit down. (to sit down = 앉다) = 앉+으세요. = 앉+으십시오. \^o^/

Please.