opendarwin man page for fade_out

fade_out(3alleg4)						  Allegro manual						 fade_out(3alleg4)

NAME
       fade_out - Gradually fades the palette to black. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       void fade_out(int speed);

DESCRIPTION
       Fades gradually from the current palette to a black screen. The speed is from 1 (the slowest) up to 64 (instantaneous).

       Note that this function will block your game while the fade is in effect, and it won't work right visually if you are not in an 8 bit color
       depth resolution.

SEE ALSO
       fade_in(3alleg4), fade_from(3alleg4), fade_interpolate(3alleg4), fade_in_range(3alleg4), ex12bit(3alleg4)

Allegro 							   version 4.4.2						 fade_out(3alleg4)