php man page for extimer

extimer(3alleg4)						  Allegro manual						  extimer(3alleg4)

NAME
       extimer - Using the timer (delays and interrupts). Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       Example extimer

DESCRIPTION
       This program demonstrates how to use the timer routines.  These can be a bit of a pain, because you have to be sure you lock all the memory
       that is used inside your interrupt handlers.  The first part of the example shows a basic use of timing using the blocking function rest().
       The second part shows how to use three timers with different frequencies in a non blocking way.

SEE ALSO
       END_OF_FUNCTION(3alleg4),  END_OF_MAIN(3alleg4), LOCK_FUNCTION(3alleg4), LOCK_VARIABLE(3alleg4), SCREEN_W(3alleg4), allegro_error(3alleg4),
       allegro_init(3alleg4), allegro_message(3alleg4), clear_to_color(3alleg4),  desktop_palette(3alleg4),  font(3alleg4),  install_int(3alleg4),
       install_int_ex(3alleg4),  install_keyboard(3alleg4),  install_timer(3alleg4),  key(3alleg4),  keypressed(3alleg4),  makecol(3alleg4), read-
       key(3alleg4), rest(3alleg4), screen(3alleg4), set_gfx_mode(3alleg4), set_palette(3alleg4), textprintf_centre_ex(3alleg4)

Allegro 							   version 4.4.2						  extimer(3alleg4)