Subject Matter of the Supplementary Estimates (C), 2017-18: Votes 1c, 5c and L7c under Department of Public Works and Government Services, Vote 3c under Office of the Parliamentary Budget Officer, Vote 1c under Privy Council Office, Votes 1c and 5c under Shared Services Canada and Votes 1c, 15c, 20c and 30c under Treasury Board Secretariat