They were not visible in the image posted by frik. I see them now. PgUp/Down are nice if they are "wherever you are used to look for them" but for some unknown reasons most brands keep making changes to the layout with every model. Another irritating trend is to make the touch pad unnecessarily big while the keyboard is crowded and pushed so close to the screen that you cover the lower part of it with your hands when you type.

"but for some unknown reasons most brands keep making changes to the layout with every model"

The thinkpad keyboard layout has been consistent as of late. The T460(s) keyboard layout is the same as the T450(s) keyboard, which is the same as the T440(s) layout, which is almost the same as the T430(s) layout with minor differences in the function keys.

These thinkpads are not an example of a brand changing the layout every model.