int wdeleteln(WINDOW *win);
int insdelln(int n);
int winsdelln(WINDOW *win, int n);
int winsertln(WINDOW *win);
All routines return the integer ERR upon failure and an OK (SVr4 specifies only "an integer value other than ERR") upon successful completion.
These functions are described in the XSI Curses standard, Issue 4. The standard specifies that they return ERR on failure, but specifies no error conditions.
Note that all but
These routines do not require a hardware line delete or insert feature in the terminal. In fact, they won't use hardware line delete/insert unless idlok(..., TRUE) has been set on the current window.
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