win

    A pointer to the window.

 y

    A window coordinate.

 x

    A window coordinate.

 ch

    If this argument is a new-line character (\n), the mvaddch and
    mvwaddch functions clear the line to the end, and move the cursor
    to the next line at the same x coordinate. A carriage return (\r)
    moves the cursor to the beginning of the specified line. A tab
    (\t) moves the cursor to the next tabstop within the window.