Purchase and sale of foreign securities: resident use of RFC accounts, bonus share acquisition, and temporary resident foreign funds allowed. Regulation 4 permits a person resident in India to purchase foreign securities from funds in a Resident Foreign Currency (RFC) account, to acquire bonus shares on such foreign securities as permitted by law, to purchase from foreign currency resources when not permanently resident, and to sell foreign securities acquired under these permitted routes; it also defines 'not permanently resident' to cover residents in India for specified-duration employment or assignments within a short-term limit.