local myObjectModeling;
insert myObjectModeling.packages["Massif"] = "...";
local myPackage;
ref myPackage = myObjectModeling.packages["Massif"];
insert myPackage.packages["Alps"] = "...";
insert myPackage.packages["Himalaya"] = "...";
insert myPackage.packages["Rock Mountains"] = "...";
insert myObjectModeling.packages["Silverware"] = "...";
ref myPackage = myObjectModeling.packages["Silverware"];
insert myPackage.packages["Spoon"] = "...";
insert myPackage.packages["Fork"] = "...";
insert myPackage.packages["Knife"] = "...";

//highlight:
foreach i in cascading first myObjectModeling.packages {
//normal:
	traceLine("\t" + key(i));
}
