Snap-To is a Control Panel that snaps the cursor to the default button
whenever a dialog comes up on your screen. Fairly simple, but it'll
increase your speed when using a Macintosh, especially if you use
dialogs often and/or have a large screen.
Snap-To can also do some other neat things, like snap the cursor back
to its original location after you close a dialog box, or
automatically disable itself in Open or Save dialogs. It can also
"glide" the cursor to the default button instead of abruptly snapping
it there.