win

    The entire size of the terminal screen. You can use the windows
    stdscr and curscr with clearok.

 boolf

    A Boolean value of TRUE or FALSE. If the argument is TRUE, this
    forces a clearscreen to be printed on the next call to refresh,
    or stops the screen from being cleared if boolf is FALSE.

    The type bool is defined in the <curses.h> header file as
    follows:

    #define bool int