When an attempt is made to close a document or project that is modified and not saved, the Save Prompt dialog box is displayed. It displays the list of modified project and documents, and buttons you can use to proceed. Documents are grouped by project and miscellaneous files.
Click Yes to save the selected documents and project. If a document is not implicitly named, the Save dialog will be displayed where you can give a name to the document.
Click No to discard all changes made to the documents you are closing.
Click Cancel to return to the IDE without closing any of the documents.