Question fstream logistics

[J_W]

The following code compiles with no errs and works.
However my VC Pro 2005 Intellisense shows a bunch of stuff but does not show anything for-> ::in <-OR-> :ut ON <-std::fstream::

I'm wondering has the template been upgraded (?) or is this just beyond the Intellisense capability ?
When I look in the include files I can't spot them either, but it is compiling (?). I'm not that good at reading ATL so maybe I'm just not spotting them.

std::fstream FileObj;
FileObj.open("TempFile.txt", std::fstream::in | std::fstream::out |                                                 std::fstream::app); 
FileObj << '\n' << _T("Whatever Text") <<  '\n' ;
FileObj << _T("Whatever other Text") << '\n' ;
FileObj.close();