// show previous slide
case KEY_UP:
case KEY_LEFT:
+ case KEY_PPAGE:
case 8: // BACKSPACE (ascii)
case 127: // BACKSPACE (xterm)
case 263: // BACKSPACE (getty)
// show next slide
case KEY_DOWN:
case KEY_RIGHT:
+ case KEY_NPAGE:
case '\n': // ENTER
case ' ': // SPACE
case 'j':