Mac OS X


 * Mac OS X keyboard shortcuts
 * http://support.apple.com/kb/HT1343
 * Press "Function + down arrow" or "Function + up arrow" as a page down / page up.
 * http://tips4mac.blogspot.com/2007/08/quicker-page-down-and-page-up.html
 * Finder Preferences
 * Show all filename extensions
 * Open Finder
 * Press
 * Click "Advanced"
 * Enable "Show all filename extensions"
 * Enable "Empty Trash securely"