HP 9000 Series 300 Tutorials Manual page 265

3
Program Operation
This section describes how curses routines behave and how they are used in a
typical programming environment.
Insert/Delete Line
The output optimization routines associated with curses use terminal
hardware insert/delete line capabilities provided the routine
idlok(stdscr,TRUE);
has been called to enable the capability. By default, insert/delete line
during refresh is disabled
(FALSE);
not for performance reasons (there is no
speed penalty involved), but because experience has shown that not only is
insert / delete line frequently not needed (especially in simple programs); it can
sometimes be visually annoying when used by curses. Insert/delete character
is
always
available to curses if it is supported by the terminal.
Program Operation 3-1