Access keys enable a user to bring focus to page elements using the keyboard. This may assist those with motor skill difficulties and prove a convenience to all.
PC / Windows: Press the 'alt' key and the the access key number together, followed by the 'enter' or 'return' key to go to the linked destination.
Macintosh: Press the 'control' key and the the access key number together, followed by the 'return' key to go to the linked destination.