ds_map_clone

map = ds_map_create();                  //      resulting map clone:
map[? "Hello"] = "World";               //      {
map[? "Goodbye"] = "Cruel World";       //          Hello: "World"
                                        //          Goodbye: "Cruel World"
clone = ds_map_clone(map);              //      }

COPY
/// ds_map_clone(map)
//
//  Clones a map simply to a new copy 
//  and returns the created map.
//
//      map         map to clone
//
/// GMLscripts.com/license
{
    var map, clone;
    map = argument0;
    clone = ds_map_create();
    ds_map_copy(clone, map);
    return clone;
}