dont_close
_flags=ios::skipws|ios::dec|ios::dont_close;
if (!(_flags & (unsigned int)ios::dont_close)) delete rdbuf();
_flags &= ~ios::dont_close;
| ios::dont_close
(streambuf*)&SBUF, TIE, 0, ios::dont_close|ios::dec|ios::skipws|EXTRA_FLAGS, ' ',0,0,6