For the simplicity of this application, we're going to create a simple XUL window that says hello world.
Create a file called '''main.xul''' in the xulapp/content directory.
Open the file, "main.xul". This file is located in the following location: /myapp /content main.xul Write the following code into the xul file. This code will popup a XUL window with the words "hello worldHello World"