This tab lets you specify which environment variables should be initialized on the service start and be accessible from within this service. This is really useful for Java, Windows .Net framework and other applications that rely on a custom environment. Please, be very careful when setting new variables.
In order to specify environment variable, please, type in or select its name, then type in or select its value and click "Add" button.
Use "Delete" 
to delete and "Up"/"Down" buttons 
to move the selected environment variable to the top or to the bottom.