insertln, winsertln — insert lines into a window
int winsertln(WINDOW *win);
functions insert a blank line before the current line in the current or
specified window. The bottom line is no longer displayed.
The cursor position does not change.
Upon successful completion, these functions return OK.
Otherwise, they return ERR.
No errors are defined.
First released in X/Open Curses, Issue 2.
X/Open Curses, Issue 4
The entry is rewritten for clarity.
The argument list for the
function is explicitly declared as void.