I'm sure this is old news to everyone, and it is fairly old to me, but I just thought i'd share it because I remember some thread asking about a similar Windows style tab-space for "clicking" buttons.
When closing a document and it prompts you to save, instead of using your mouse to click "Don't Save" you can just hit Apple+D.
I've also noticed it happens in others applications, Photoshop for example, when you have the option to Replace a file and Cancel is highlighted by default, you can hit Apple+R to do replace rather than using the mouse.
Maybe there is some sort of standard I dont know about, but I thought that was kinda cool
When closing a document and it prompts you to save, instead of using your mouse to click "Don't Save" you can just hit Apple+D.
I've also noticed it happens in others applications, Photoshop for example, when you have the option to Replace a file and Cancel is highlighted by default, you can hit Apple+R to do replace rather than using the mouse.
Maybe there is some sort of standard I dont know about, but I thought that was kinda cool