debian man page for lock_bitmap

lock_bitmap(3alleg4)						  Allegro manual					      lock_bitmap(3alleg4)

NAME
       lock_bitmap - Locks the memory used by a bitmap. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       void lock_bitmap(BITMAP *bitmap);

DESCRIPTION
       Under  DOS,  locks all the memory used by a bitmap. You don't normally need to call this function unless you are doing very weird things in
       your program.

Allegro 							   version 4.4.2					      lock_bitmap(3alleg4)