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The RIBA is a member organisation, with 44,000 members. Chartered Members are entitled to call themselves chartered architects and to append the post-nominals RIBA after their name; Student Members are not permitted to do so. Formerly, fellowships of the institute were granted, although no longer; those who continue to hold this title instead add FRIBA.

What type of Royal Institute members are not able to use the organization's acronym after their names?
Student Members