how to make a folder without any name in windows ?

I dont know this is bug or not of microsoft windows os but this is not repaired in windows 7 also. you can do this any windows version.

make this way —> right click on folder and select rename / select the folder and press f2

–> erase the name and press Alt + 0160 of Numpad . if u press digit from upper side of  keyboard then it will not work.you have to use numpad for typing digit.

this folder has no directory.   

now if u want to make this folder invisible then follow this step —->  right click on your  nameless folder—>  properties —> icon (in above tab) –> change icon

then click ok to apply this. now u have a folder without visibility and name.