ifstream open output?

[camper4834]

Can someone explain to me why this website says that ifstream supports output while everyone else on earth says it can't?

Please look at the following page
http://www.cplusplus.com/reference/fstream/ifstream/open/

Under "mode" the flag "out" is available
AND right under the "mode" table the page says "Note that even though ifstream is an input stream, its internal filebuf object may be set to also support output operations."

I have tried forcing an ifstream object to do output but it is not working!
I am using visual studio 2015 community.



TLDR version; Why does cplusplus.com say ifstream supports output?!