man DAT_ID () - Makes an ID value from four letters. Allegro game programming library.
NAME
DAT_ID - Makes an ID value from four letters. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
Macro DAT_ID(a, b, c, d);
DESCRIPTION
Every object or property in a datafile is identified by a 4 letter ID, which can be created with this macro. For example, to access the NAME property of a datafile object, you could use:
get_datafile_property(datob, DAT_ID('N','A','M','E'));