Subwindows and delwin

[Mike Gran]

The curses docs say that a subwin shares memory with its parent window, and 
that it needs to be freed before the parent window is freed.

If a window and a subwindow share the  memory, and if a subwindow is freed with 
delwin(), is the parent window unaffected?  Can I continue to use the parent 
window?

Thanks,

Mike Gran