ada-mode: GUI Editor

 
 5.2 GUI Editor
 ==============
 
 The project file editor is invoked with the menu ‘Ada | Projects |
 Edit’.
 
    Once in the buffer for editing the project file, you can save your
 modification using the ‘[save]’ button at the bottom of the buffer, or
 the ‘C-x C-s’ binding.  To cancel your modifications, kill the buffer or
 click on the ‘[cancel]’ button.