app.js

Ti.include("/struct/struct.js");

S.app.mainWindow = S.ui.createApplicationWindow();
S.app.mainWindow.open();

S.app.mood = "RADIANT!";
Ti.App.fireEvent("app:mood.update");
setTimeout(function(){Ti.App.fireEvent("app:msg",{msg:"Welcome!"});},1000);

globalobject.js

var S = {
	os: function(arg){
		// utility function for branching logic depending on os
	},
	app: { // application state variables
		mood: "radiant"
	},
	ui: {
		styles: {
			// various app-wide theme definitions 
		},
		createApplicationWindow: function(){
			// creates the main app window. Called from app.js, will in turn call the
			// other view constructors and populate the window. Defined in
			// applicationwindow.js
		},
		createFooView: function(){
			// creates the red empty Foo view. Defined in fooview.js, used in 
			// createApplicationWindow.
		},
		createBarView: function(){
			// creates the green Bar view containing mood info. Defined in 
			// barview.js, used in createApplicationWindow.
		},
		createBazView: function(){
			// creates the blue Baz view where you can set mood. Defined
			// in bazview.js, used in createApplicationWindow.
		}
	}
};

openingwindow.js

myButton.addEventListener("click",function(){
	Ti.UI.currentTab.open(Ti.UI.createWindow({url:'somefile.js', importantdata: mydata }));
});