Correct usage of Next and Previous icons showing relationship between equal pieces of content.
Correct usage of Back icon showing movement ‘up’ a layer of navigation.
Don’t use the Home icon for movement between a single layer of navigation. Instead, use it when it will take a user up multiple layers ‘all the way home’.
Correct usage of Close icon showing the dismissal of a modal window appearing as a layer above the current screen.
If your screen is wall-mounted, position interactive hotspots below the centre line. See accessibility considerations for more detail.