This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.
Initializes soft label key functions
This function must be called before ncurses_initscr() or ncurses_newterm() is called.
If ncurses_initscr() eventually uses a line from stdscr to emulate the soft labels, then this parameter determines how the labels are arranged of the screen.
0 indicates a 3-2-3 arrangement of the labels, 1 indicates a 4-4 arrangement and 2 indicates the PC like 4-4-4 mode, but in addition an index line will be created.