FWIW, here's the list of things that I'm using right now: _IO_no_init _IO_file_init _IO_file_finish _IO_file_attach _IO_un_link _IO_file_open _IO_file_close_it _IO_file_xsputn _IO_wfile_xsputn _IO_file_xsgetn _IO_wfile_xsgetn _IO_file_seekoff _IO_wfile_seekoff _IO_file_setbuf _IO_wfile_setbuf _IO_file_sync _IO_wfile_sync -benjamin