File > Exit allows you to exit the Application.
If you have not saved your Project Each Project you create represents a single Speech Driven Information System An Information System is a general term used to describe the product you are designing with this software. This could be any type of system in which you can give information to your callers, such as a Virtual Customer Service Center, a Virtual Technical Support Center, or a Virtual Help Desk.. So, if you want to create three separate Information Systems, you will need to create three different Projects. before you hit File > Save, the Project dialog will open and ask you if you wish to save.
Complete Help Topic List | Speech Platform Product Information